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

It is not necessary but u have to understand the concept of each chapter then u are able to attempt any kind of question some question can also come from another extra books but don't take tension if your concept is clear u can cross any hurdle.....?

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How many terms of AP -6,-11/2,-5......will give the sum zero Pls amswer fast

Posted by Riya Jain 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Riya Jain 6 years, 11 months ago

Thank you

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Ram Kushwah 6 years, 11 months ago

0=n/2(-12+(n-1)×(1/2))

n(-12+ n/2 -1/2)=0

Or -24+n-1=0

n=25

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SinO-cosO+1÷ SinO+cosO-1 = 1 ÷ secO-tanO

Posted by Jijith Vazhayil 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Jijith Vazhayil 6 years, 11 months ago

It need to be evaluated

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Who invented geometry

Posted by Kuldeep Singh 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Premraj Verma 6 years, 11 months ago

euclid

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Find the HCF of 1190and 1445 in the. form of 1190m+1445n

Posted by Sachin Kumar 6 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

Here we have to find HCF of 1190 and 1445 and express the HCF in the form 1190m + 1445n.
1445 = 1190 × 1 + 255
1190 = 255 × 4 + 170
255 = 170 × 1 + 85
170 = 85 × 2 + 0
So, now the remainder is 0, then HCF is 85
Now,
85 = 255 - 170
= (1445 - 1190) - (1190 - 255 × 4)
= 1445 - 1190 - 1190 + 255 × 4
= 1445 - 1190 × 2 + (1445 - 1190) × 4
= 1445 - 1190 × 2 + 1445 × 4 - 1190 × 4
= 1445 × 5 - 1190 × 6
= 1190 × (- 6) + 1445 × 5
= 1190m + 1445n , where m = - 6 and n = 5

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What is realnumbers

Posted by Veeresh Sonnad 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Naira Mishra 6 years, 11 months ago

Collection of rational and irrational number is called real number

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Vivek Kumar 6 years, 11 months ago

A real number is a number that can be found on number line

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On a straight line passing through the foot of a tower ,two points C and D are at distance of 4m and 16m from the foot respectively. In the angle of elevation from C and D of the top of the tower are complementary, then find the height of tower.

Posted by Saurabh Kushwaha 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the next term of AP : 3,1,-1,-3....

Posted by Jogendrabhoi Jogendrabhoi 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 11 months ago

a= 3

Common difference (d) = 1 - 3 = -2

5th term = -3 +( -2) = -5

T₅= a +4d

= 3 + 4(-2)

= 3 + (-8)

= -5

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In AP S5+S7 =167 S10= 235 Find the AP nth term

Posted by Kiran Yadav 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

What is S.. Here's..

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Model test paper 1 math solutions

Posted by Saurabh Singh Singh 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the value of cotsquaretheta +1/sinsquare theta

Posted by Baghel Kishor 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Varun Punia 6 years, 11 months ago

The value is 1/sin^4theta

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state pythagorus thorem

Posted by Khushan Sangha 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhinav Yadav 6 years, 11 months ago

In a right angled triangle, the square of hypotenuse is equal to the sum of squares of other two sides.

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Can anyone send solutions to math QP code RSPL /1

Posted by Akash Murugesan 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Avanish Yadav 6 years, 11 months ago

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if tan tita plus sin tita=m tan tita - sin tita=n show that m sq-n sq=4root mn

Posted by Jinendar Khivsara 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

D.J Alok 6 years, 11 months ago

L.h.s Msq - Nsq = (tanA+sinA)sq -(tanA-sinA)sq =4tanAsinA. R.h.s 4√mn =4√(tanA+sinA)(tanA-sinA) =4√tanAsq - sinAsq =4√sinAsq/cosAsq - sinAsq =4√(sinAsq-sinAsq×cosAsq)/cosA =4sinA/cosA√1-cosAsq =4tanA√sinAsq =4tanAsinA =L.h.s (proved)

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Find the value of k for which one root of the quadratic equation kx square -14x + 8=0 is six times the other .

Posted by Sunil Sunil 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Madhu Singh 6 years, 11 months ago

K=3

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Puja Sahoo? 6 years, 11 months ago

K=3

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If the diameter of cross section of wire is decreased by 5 %.How much percent will the length be increased so that volume remains same?

Posted by Hello Hello 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Hello Hello 6 years, 11 months ago

Plz tell me the answer

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If sec theta + tan theta =p then find the value of sin theta.

Posted by Sakshi Jain 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Krishna Kireeti 6 years, 11 months ago

P square - 1 / p square + q

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1aur1 kitna hota hai

Posted by Biswajeet Sharma 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Sonu 6 years, 11 months ago

Is questio ka jawab to computer bhi nahin de payega

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Raunak Pandey ?? 6 years, 11 months ago

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Anushka Jugran ? 6 years, 11 months ago

Full syllabus complete kr liya kya.. Jo itne complicated question puch rahe ho??

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Yaar 6 years, 11 months ago

2 , 11

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Yaar 6 years, 11 months ago

It's a very complicated question ?????

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Find the hcf of 150 and 225

Posted by Dinesh Rajpurohit 6 years, 11 months ago

CBSE > Class 10 > Mathematics

6 answers

Saurabh Yadav 6 years, 11 months ago

By Euclid division lemma a=bq+r 225=150×1+75 150=75×2+0 So 75 is the HCF

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Raunak Pandey ?? 6 years, 11 months ago

Oh sorry it's 75

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Raunak Pandey ?? 6 years, 11 months ago

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Seemant Kumar 6 years, 11 months ago

Hcf if 75

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Yaar 6 years, 11 months ago

1Thank You

Honey ☺☺☺ 6 years, 11 months ago

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Find the hcf of 120 and 250 by EDL

Posted by Dinesh Rajpurohit 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Krishna Kireeti 6 years, 11 months ago

EDL means Euclids Division Lemma

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Raunak Pandey ?? 6 years, 11 months ago

What is edl

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Yaar 6 years, 11 months ago

HCF 10

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Honey ☺☺☺ 6 years, 11 months ago

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Yaar 6 years, 11 months ago

Bro you can do this by yourself as it is difficult to display it

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What is co-prime

Posted by Vipin Bisht 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Arjun Gupta 6 years, 11 months ago

When 2 no. Do not have their common factor other then 1

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Honey ☺☺☺ 6 years, 11 months ago

Whose hcf is 1

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Sin54=sec36

Posted by Harsh Pandey 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Ram Kushwah 6 years, 11 months ago

Sin54=sin(90-36)=cos36=1\sec36

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Mais

Posted by David Patel 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Puja Sahoo? 6 years, 11 months ago

What's your question............

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Prisha Rathore 6 years, 11 months ago

❓❓

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A pair of tangents can be constructed to a circle inclined at an angle of 170°.justify.

Posted by Kirat Benipal 6 years, 11 months ago

CBSE > Class 10 > Mathematics

4 answers

Ram Kushwah 6 years, 11 months ago

Tangents are possible as angle between radius=360-(90+90+170)=10°

Hence tangents are possible

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Ram Kushwah 6 years, 11 months ago

Take photo of figure then copy and paste.if there is problem try in Mozilla fire fox browser.

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Ashish Garhwal 6 years, 11 months ago

Yes, it is possible but it seems to be very nearest to the circumference.

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Prisha Rathore 6 years, 11 months ago

How should we post the figure

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Two line segments AB and AC include an angle of 60° where AB=5cm and AC=7cm.locate points P and Q on AB and AC respectively, such that AP=3/4 AB and AQ=1/4AC. Join P and Q and measure the length PQ.

Posted by Kirat Benipal 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Ram Kushwah 6 years, 11 months ago

First construct ∆ABC as normal.mark or cut AP and AQ as:

AP =3/4× AB=3/4×5=3.75 cm

AQ=1/4AC=1/4×7=1 75 cm

Join and measure PQ

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Prisha Rathore 6 years, 11 months ago

How should I post the figure. I don't know

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Prove that sin-cos+1 1 __________ = ______. Sin +cos-1 Sec-tan

Posted by Prince Garg 6 years, 11 months ago

CBSE > Class 10 > Mathematics

6 answers

Puja Sahoo? 6 years, 11 months ago

Hope yu can understand ??

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Puja Sahoo? 6 years, 11 months ago

First divide numerator and denominator by cos theta, then multiply (tan theta - sec theta) in both numerator and denominator. And solve it.

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Sahitha?? Sharma 6 years, 11 months ago

LHS: Sin-cos+1/sin+cos-1. = ((sin-cos+1)/cos)/(sin+cos-1)/cos =Tan+sec-1/tan-sec+1 === substitute sec^2-tan^2 in place of +1 =Tan+sec-1/tan -sec+(sec^2-tan^2) =Tan+sec-1/tan-sec+(sec-tan)(sec+tan) =Tan+sec-1/-(tan-sec)(sec+tan-1) =1/sec-tan

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Vishal Aryan 6 years, 11 months ago

Explain the every thing

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Sahitha?? Sharma 6 years, 11 months ago

Can't understand the question.?

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Prince Garg 6 years, 11 months ago

Sin -cos+1÷sin +cos -1 = 1÷sec-tan

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7sin^2A+3cos^2A=4.S.T: tanA=1/√3