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 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Disha Kumari 6 years ago

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

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Disha Kumari 6 years ago

One min pura krti hun

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Sanaya Sharma ???? 6 years ago

q is incomplete

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Weightage of chapters

Posted by Naresh Puri 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

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

Posted by Srikanta Nayak 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Aryan Dixit 6 years ago

Samjha nhi que

1Thank You

Tanu Kumari 6 years 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 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 6 years 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 6 years ago

17 and -18

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ANSWER

√11 is rational no

Posted by Vaibhav Sharma 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Tanu Kumari 6 years ago

Yes

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Mahi Rajput 6 years ago

Yes

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years 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 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Vaibhav Sharma 6 years ago

???

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ANSWER

How exam preparation is going on.

Posted by Gunjan ??? 5 years, 11 months ago

CBSE > Class 10 > Mathematics

18 answers

??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Hlo

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?Ritesh Gupta☺️ 6 years ago

Good night ,sd tc???

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Sowndaryaa Lakshmi V 6 years ago

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

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Sowndaryaa Lakshmi V 6 years ago

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

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?Ritesh Gupta☺️ 6 years ago

Ok ????

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Sowndaryaa Lakshmi V 6 years ago

Kal exam ke baath bahut baate karenge? ok??

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Sowndaryaa Lakshmi V 6 years ago

Really very very sorry

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Sowndaryaa Lakshmi V 6 years ago

Bura na maano plsss

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?Ritesh Gupta☺️ 6 years ago

Bye..?‍♂️

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?Ritesh Gupta☺️ 6 years ago

Ok sowndu no problem ??????

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Sowndaryaa Lakshmi V 6 years ago

Aapka words sach ho jay....

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Sowndaryaa Lakshmi V 6 years ago

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

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?Ritesh Gupta☺️ 6 years ago

Tenson mat lijiye, exam acha jaiga

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Sowndaryaa Lakshmi V 6 years ago

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

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?Ritesh Gupta☺️ 6 years ago

Preperation ho gya ??

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Sowndaryaa Lakshmi V 6 years ago

Hi ritesh

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?Ritesh Gupta☺️ 6 years ago

Hiiiiii sowndu ?‍♂️

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Sowndaryaa Lakshmi V 6 years ago

Uff ???

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ANSWER

Suhani tum gujrat se ho

Posted by Sweety Kadyan 6 years ago

CBSE > Class 10 > Mathematics

33 answers

Śěřãj The Cute? 6 years ago

Bhai friend ship kar lo dono

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Srry bhai

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? Royal Thakur ? 6 years ago

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

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? Royal Thakur ? 6 years 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 6 years 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 ? 6 years ago

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

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Hlo smarkeee

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Kya smarkee

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Saanvi Saksena 6 years ago

Zaroor aana .....

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Sowndaryaa Lakshmi V 6 years 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 6 years ago

Maja ma?

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Sowndaryaa Lakshmi V 6 years ago

Mai basic

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Gunjan ??? 6 years ago

Standard or basic sowndu

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? Royal Thakur ? 6 years ago

What's going on ashu???

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Sowndaryaa Lakshmi V 6 years ago

King kholi??

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Saanvi Saksena 6 years ago

Or sowndu sab thik

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???Queen*****P.Y.K ??? 6 years ago

???

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Oh ho

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???Queen*****P.Y.K ??? 6 years ago

Hii friends

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Sowndaryaa Lakshmi V 6 years ago

Suhani kemjo

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Sweety Kadyan 6 years ago

Majama

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Sowndaryaa Lakshmi V 6 years ago

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

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Saanvi Saksena 6 years ago

Hii sowndu

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Sowndaryaa Lakshmi V 6 years ago

Suhani gujarat se hai.. mai nahi

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Amar ka kya hua sowndu

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Sowndaryaa Lakshmi V 6 years ago

Kemjo

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Saanvi Saksena 6 years ago

Yes.....q

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Sweety Kadyan 6 years ago

Hii

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Gunjan ??? 6 years ago

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Sweety Kadyan 6 years ago

Me bhi Gujrat se hu

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Sowndaryaa Lakshmi V 6 years ago

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Hlo

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Sowndaryaa Lakshmi V 6 years ago

Ha vo Gujarat se hai

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ANSWER

Chapter11 exercise 11.2 question number 4

Posted by Aniket Use 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Sneha...... Dream Girl ??? 6 years ago

That is complete ???

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Sneha...... Dream Girl ??? 6 years 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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ANSWER

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 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

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

Posted by Sanaya Sharma ???? 5 years, 11 months ago

CBSE > Class 10 > Mathematics

7 answers

Sanaya Sharma ???? 6 years ago

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

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Hlo sanya

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Sahil Singh 6 years ago

How are you

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Saanvi Saksena 6 years ago

Hii

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Sahil Singh 6 years ago

Hlo

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Sweety Kadyan 6 years ago

Hii sanaya kya bol rahe the aap

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Saanvi Saksena 6 years ago

Hiii sanaya

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ANSWER

2x2-x+1/8=0

Posted by Harsh Bharti 6 years 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 6 years 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 ??? 6 years ago

CBSE > Class 10 > Mathematics

2 answers

???Akhil Singh Sengar ??? 6 years ago

Remainder ayega x+a ki form mein

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Mona Rastogi 6 years 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 6 years 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 6 years 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 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Passing marks lane ke liye konse chapter important h??

Posted by Gajender Prajapati 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Ayush Arya 6 years ago

Bhai basic hai ya standard

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Sanaya Sharma ???? 6 years ago

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

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Sweety Kadyan 6 years ago

Sab

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ANSWER

Prove the therom of tangent

Posted by ꧁༺★King K. Tyagi Ji}★༺꧂ ??? 6 years ago

CBSE > Class 10 > Mathematics

34 answers

꧁༺★King K. Tyagi Ji}★༺꧂ ??? 6 years ago

For new friends

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 6 years ago

Ok sanaya ji but congratulations

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 6 years ago

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

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? Royal Thakur ? 6 years ago

Ok sorry seraj bro

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Sanaya Sharma ???? 6 years ago

areee tyagi sis esa kuch ni h

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Sanaya Sharma ???? 6 years ago

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

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Sab shant ho jayo pleaae

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 6 years 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 ???? 6 years ago

forget ?

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? Royal Thakur ? 6 years 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 ? 6 years 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? 6 years ago

???????

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??(｡☬Ashu☬｡)?? Bhardwaj 6 years ago

Tum shant ho jayo sanya use kahene do

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꧁༺★King K. Tyagi Ji}★༺꧂ ??? 6 years ago

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

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Sanaya Sharma ???? 6 years ago

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