CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

Given: A right-angled triangle ABC. To Prove- AC2 = AB2 + BC2 Pythagoras Theorem Proof Proof: First, we have to drop a perpendicular BD onto the side AC We know, △ADB ~ △ABC Therefore, ADAB=ABAC (Condition for similarity) Or, AB2 = AD × AC ……………………………..……..(1) Also, △BDC ~△ABC Therefore, CDBC=BCAC (Condition for similarity) Or, BC2= CD × AC ……………………………………..(2) Adding the equations (1) and (2) we get, AB2 + BC2 = AD × AC + CD × AC AB2 + BC2 = AC (AD + CD) Since, AD + CD = AC Therefore, AC2 = AB2 + BC2 Hence, the Pythagorean thoerem is proved

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Given that sin sin Alpha=√3 and cos n. 2

Posted by Disha Kumari 5 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Disha Kumari 5 years, 8 months ago

Given that sin alpha=3/2 and cos bita=0,then tha value of bita-alpha is

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Disha Kumari 5 years, 8 months ago

One min pura krti hun

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Sanaya Sharma ???? 5 years, 8 months ago

q is incomplete

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Weightage of chapters

Posted by Naresh Puri 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

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The length of a circle drawn from a external point is equal

Posted by Srikanta Nayak 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Aryan Dixit 5 years, 8 months ago

Samjha nhi que

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Tanu Kumari 5 years, 8 months ago

Lendth of two tengent are drawn from an external point are equal

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ANSWER

The product of two consecutive positive integers is 306.we need to find the integer

Posted by Ketan Sagar 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 5 years, 8 months ago

Let two consecutive numbers are x and (x + 1)

A/C to question,
product of x and (x + 1) = 306
⇒x(x + 1) = 306
⇒x² + x - 306 = 0
⇒ x² + 18x - 17x - 306 = 0
⇒x(x + 18) - 17(x + 18) = 0
⇒(x + 18)(x - 17) = 0⇒ x = 17 and -18

Hence, numbers are x = 17 and (x +1) = 18

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Tanu Kumari 5 years, 8 months ago

17 and -18

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ANSWER

√11 is rational no

Posted by Vaibhav Sharma 5 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Tanu Kumari 5 years, 8 months ago

Yes

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Mahi Rajput 5 years, 8 months ago

Yes

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Yes

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Prove that the line segments joining the mid.points of the adjacent sides of a quadrilateral forms a parallelogram.

Posted by Rugved Mahajan 5 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Vaibhav Sharma 5 years, 8 months ago

???

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How exam preparation is going on.

Posted by Gunjan ??? 5 years, 7 months ago

CBSE > Class 10 > Mathematics

18 answers

??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Hlo

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?Ritesh Gupta☺️ 5 years, 8 months ago

Good night ,sd tc???

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Sowndaryaa Lakshmi V 5 years, 8 months ago

???galti se aagaya??????

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Ok good night... Cu ... Take care?????☺️???

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?Ritesh Gupta☺️ 5 years, 8 months ago

Ok ????

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Kal exam ke baath bahut baate karenge? ok??

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Really very very sorry

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Bura na maano plsss

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?Ritesh Gupta☺️ 5 years, 8 months ago

Bye..?‍♂️

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?Ritesh Gupta☺️ 5 years, 8 months ago

Ok sowndu no problem ??????

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Aapka words sach ho jay....

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Ritesh bura na mano... Mai jaake padai kar lu???

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?Ritesh Gupta☺️ 5 years, 8 months ago

Tenson mat lijiye, exam acha jaiga

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Nahi... Bahut tension horha hai.... Mai abhi padai ksr rhi huu

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?Ritesh Gupta☺️ 5 years, 8 months ago

Preperation ho gya ??

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Hi ritesh

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?Ritesh Gupta☺️ 5 years, 8 months ago

Hiiiiii sowndu ?‍♂️

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Uff ???

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Suhani tum gujrat se ho

Posted by Sweety Kadyan 5 years, 8 months ago

CBSE > Class 10 > Mathematics

33 answers

Śěřãj The Cute? 5 years, 8 months ago

Bhai friend ship kar lo dono

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Srry bhai

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? Royal Thakur ? 5 years, 8 months ago

Agar tune ye sab kuch band nhi kiya to tera har ans report karunga..

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? Royal Thakur ? 5 years, 8 months ago

Chup krr bhai mana h isiliye smjha rha hu ye sb mat krr.....focus on your studies.....aur dusri baat ye study app hai koi dating app nhi...tera ye daily ka ho gya h.....

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Royal mein tumhe apna bhai mana h or tu meri hi piche pada h yah sab mera frnd h

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? Royal Thakur ? 5 years, 8 months ago

Ashu tu nhi sudhrega shi kga tha uss din amiable ne...

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Hlo smarkeee

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Kya smarkee

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Saanvi Saksena 5 years, 8 months ago

Zaroor aana .....

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Suahani mai navrathri mai gujarat aaongaa. Muje chanya choli pehenke garba karna hai... Aur muje dokla, jalebi phapda sab khaana hai...

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Saanvi Saksena 5 years, 8 months ago

Maja ma?

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Mai basic

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Gunjan ??? 5 years, 8 months ago

Standard or basic sowndu

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? Royal Thakur ? 5 years, 8 months ago

What's going on ashu???

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Sowndaryaa Lakshmi V 5 years, 8 months ago

King kholi??

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Saanvi Saksena 5 years, 8 months ago

Or sowndu sab thik

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???Queen*****P.Y.K ??? 5 years, 8 months ago

???

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Oh ho

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???Queen*****P.Y.K ??? 5 years, 8 months ago

Hii friends

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Suhani kemjo

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Sweety Kadyan 5 years, 8 months ago

Majama

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Ashu aree mai pagal hogayi... Kal exam aur quadratic equations mahapapiii????

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Saanvi Saksena 5 years, 8 months ago

Hii sowndu

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Suhani gujarat se hai.. mai nahi

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Amar ka kya hua sowndu

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Kemjo

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Saanvi Saksena 5 years, 8 months ago

Yes.....q

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Sweety Kadyan 5 years, 8 months ago

Hii

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Gunjan ??? 5 years, 8 months ago

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Sweety Kadyan 5 years, 8 months ago

Me bhi Gujrat se hu

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Sowndaryaa Lakshmi V 5 years, 8 months ago

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Hlo

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Sowndaryaa Lakshmi V 5 years, 8 months ago

Ha vo Gujarat se hai

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ANSWER

Chapter11 exercise 11.2 question number 4

Posted by Aniket Use 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Sneha...... Dream Girl ??? 5 years, 8 months ago

That is complete ???

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Sneha...... Dream Girl ??? 5 years, 8 months ago

Phle 5 cm ka cuercel bnao phir santer pr 120 ka angle bnao phir dono sid 90 ka angle bnao . Uske bad tumhara 60 ka angle bnega .

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size of a triangular field at 25 24 7 at the three corners of the field a car of buffalo and horse are tied separately with ropes of 3.5 metre is to Grace in the field find the area of the field that cannot be graced by these animals

Posted by Sanya Mishra 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

how to find value of alpha-beeta... plzz ans

Posted by Sanaya Sharma ???? 5 years, 7 months ago

CBSE > Class 10 > Mathematics

7 answers

Sanaya Sharma ???? 5 years, 8 months ago

hii kohli and sahil... m thoda q solve kr lo

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Hlo sanya

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Sahil Singh 5 years, 8 months ago

How are you

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Saanvi Saksena 5 years, 8 months ago

Hii

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Sahil Singh 5 years, 8 months ago

Hlo

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Sweety Kadyan 5 years, 8 months ago

Hii sanaya kya bol rahe the aap

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Saanvi Saksena 5 years, 8 months ago

Hiii sanaya

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2x2-x+1/8=0

Posted by Harsh Bharti 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the area of the shaded region,enclosed between two concentric circle of radii 7and 14cm where AOC=40

Posted by Tashi Phuntsok 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Read the passage and answer the question that follows: A mathematics teacher Ramnivas Mathuriya organised a workshop for class 10th students in the school auditorium to investigate the practice of students about subject knowledge. In order he write a polynomial x⁴-6x³+16x²-25x+10 on blackboard. After that he said the students, of we divide above polynomial by x²-2x+k, then the remainder comes out to be in the form of x+a, then find the value of K. ‘Ok friends solve it’...

Posted by ???Akhil Singh Sengar ??? 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

???Akhil Singh Sengar ??? 5 years, 8 months ago

Remainder ayega x+a ki form mein

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Mona Rastogi 5 years, 8 months ago

What is x+a whats the value of a

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ANSWER

The first term of AP of consecutive integer is p square + 1 the sum the sum of 2p+1 terms of this ap is

Posted by Ashish Nainwal 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The angle of elevation of the top of a tower from two points at distance *a* and *b* meters from the base and is the same straight line with it are complementary. Prove that height of the tower is √ab meters

Posted by Raja Dada 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The angles of elevation of the top of a tower from two points at distances of 5 meters and 20 meters from the base of the tower and in the same straight line with it are complementary. Find the height of the tower.

Posted by Raja Dada 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Passing marks lane ke liye konse chapter important h??

Posted by Gajender Prajapati 5 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Ayush Arya 5 years, 8 months ago

Bhai basic hai ya standard

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Sanaya Sharma ???? 5 years, 8 months ago

15,14,1,2,3,4,10

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Sweety Kadyan 5 years, 8 months ago

Sab

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ANSWER

Prove the therom of tangent

Posted by ꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 8 months ago

CBSE > Class 10 > Mathematics

34 answers

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 8 months ago

For new friends

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 8 months ago

Ok sanaya ji but congratulations

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 8 months ago

Oo sorry muza blood ki vomating hona lage the is liya reply nee kya

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? Royal Thakur ? 5 years, 8 months ago

Ok sorry seraj bro

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Sanaya Sharma ???? 5 years, 8 months ago

areee tyagi sis esa kuch ni h

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Sanaya Sharma ???? 5 years, 8 months ago

listen hmne abhi tk ek q dala ok so sb mt kho sb m hm bh ajate

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Sab shant ho jayo pleaae

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 8 months ago

Sanaya ji ignoring me koi nee ab to vaisa bhi ap ko new friends mil gaya congratulations?byy

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Sanaya Sharma ???? 5 years, 8 months ago

forget ?

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? Royal Thakur ? 5 years, 8 months ago

Aur mai tumlog ke beizzati nhi krne aaya tha.....bs tum log itne q bnate ho mujhe usse problem h....but sorry ab kuch nhi kahunga...

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? Royal Thakur ? 5 years, 8 months ago

Sanaya i am not topper ok....and maine tum logo ko ghdha nhi bola.....and sanaya mai tumse ld nhi rha hu tum pehle aayi ho....and sorry agar mere kisi baat se tumhe bura lga ho to.......now close this chapter...sorry oncr again...

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Śěřãj The Cute? 5 years, 8 months ago

???????

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??(｡☬Ashu☬｡)?? Bhardwaj 5 years, 8 months ago

Tum shant ho jayo sanya use kahene do

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 5 years, 8 months ago

Seraj sanaya ji ladai nee kr rhi ha , royal na batimizi ki ha

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Sanaya Sharma ???? 5 years, 8 months ago

seraj he came here just for fell us ashamed and i don't like it ?