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

Cos theta / sin theta - sin theta/ cos theta = (Cos ^ theta - sin^ theta )/sin theta cos theta =[cos^ theta -(1- sin^ theta)] / sin theta cos theta = (2 cos^ theta -1)/ sin theta cos theta

1Thank You

Aashish Gaurav 6 years, 3 months ago

LHS

0Thank You

ANSWER

To find the HCF of two number experimentally based on Euclid division Lemma

Posted by Kalpana Devi 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If (cos theta+sin theta)=2,show that cos theta -sin theta=√2sin theta

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

prove that :- root( 1- cos theta )÷root (1-cos theta)=cosec theta +cot theta

Posted by Riddhi Gaur 6 years, 3 months ago

CBSE > Class 10 > Mathematics

6 answers

Riddhi Gaur 6 years, 3 months ago

sorry, typing mein galti ho gayi thi first wale mein (1+cos theta)

0Thank You

Lucifer ? Morningstar? 6 years, 3 months ago

RHS=[1/sin -cos/sin]. ||. [1-cos/sin]². ||. (1-cos)(1-cos)/1²-cos². ||. (1-cos)(1-cos)/(1+ cos)(1-cos). ||. 1-cos/1+cos. ||.

1Thank You

Kuhu Vats 6 years, 3 months ago

To phir question ko vasi likh kr bejo m solve kr dugi

1Thank You

Lucifer ? Morningstar? 6 years, 3 months ago

Yes kuhu is right

1Thank You

Kuhu Vats 6 years, 3 months ago

May b ek me minus ki jgh plus aaye ga

1Thank You

Kuhu Vats 6 years, 3 months ago

Riddhi may b aapka question glt h

1Thank You

ANSWER

If (sin theta + cos theta)=p and (sec theta +cosec theta) =q,show that q(p²-1)=2p

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is formula of triangle

Posted by Satish Official1 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Lucifer ? Morningstar? 6 years, 3 months ago

Area of right triangle=1/2×base×height

2Thank You

Lucifer ? Morningstar? 6 years, 3 months ago

For Equilateral triangle=√3/4(side)²

2Thank You

ANSWER

(1+cot theta-cosec theta)(1+tan theta +sec theta)=2

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Pk . 6 years, 3 months ago

Multiply kar do yrr....

0Thank You

ANSWER

The monthly salary of a person was rupees320 for each of the first three years. He then got an annual increment of rupees 40 per month for each of the following successive 12years. His salary remained constant till retirement and he calculated that his average monthly salary during the service period was rupees 698. Find the period of his service

Posted by Varsha Khandelwal 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Aashish Gaurav 6 years, 3 months ago

Total salary for first 3 years= (36× 320) =11520 Salary after 12 years = 360 +(12-1)40 =360+440=800 =Total Salary after 3 years and so on for 12 years = 360 × 12+400× 12 ans so on =12× (360+400...) =12×[12/2× {360+(12-1) ×40} =12×[6×(360+440)] =12×6×800 =57600 Let the remaining months of service be x. Now (57600+11520+ 800×x)/36+144+x =698 (69120+800x)/180+x=698 69120+800x= 698×180+698x 102x=56520 x=554 46 years Now his entire service life is 3+12+46=61years

0Thank You

ANSWER

If tan theta +sin theta =m and tan theta--sin theta =n, show that m²-n²=4√mn.

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Shreya ... 6 years, 3 months ago

LHS = (Tan thetha+sin theta)^2 - (Tan thetha+sin theta)^2
RHS=4√mn
4√(tan thetha+sin theta)(tan theta-sin theta)
4√(tan^2theta-sin^2theta)
4.√(sin^2theta/cos^2theta-sin^2theta)
4.√sin^2theta-sin^2theta cos^2theta/cos theta = 4.sin theta/cos theta.1√1-cos^2 theta= 4tan.√sin^2 theta = 4 tan theta sin theta.

2Thank You

ANSWER

two tangent PR and RQ are drawn from external point R to the circle . OR is line joining centre O and R which is equal to the diameter of circle. prove that PR +QR = OR

Posted by Pratik Kanungo 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Arithmetic progression explain

Posted by Mahek Mb 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Pk . 6 years, 3 months ago

Arithmetic progression is the sequence of numbers. Such that the difference between two consecutive number is constant.

2Thank You

ANSWER

A boy of height 95cm is walking away from base of a lamp post at a speed of 1.5m/‌‌‌‌s. If the lamp post is 3.8m above the ground, find the length of his sladow after 5second

Posted by Pranjal Jain 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

2020 cbse sample paper class 10

Posted by Anurag Yadav 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

An aeroplane left 50 mins later than its scheduled time and in order to reach the destination 1250 km away in time it had to increase its speed by 250km/h from its usual speed find its usual speed

Posted by Sushant More 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Hashmi Azim 6 years, 3 months ago

2x+8y=9 3y_6=5 in substitution and cross multiple method

3Thank You

ANSWER

How( 2+2=5) ??

Posted by Shivansh . 4 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 11 months ago

NOT POSSIBLE

0Thank You

ANSWER

A statue, 1.6m tall, stands on the top of a pedestal. From a point on the ground, angle of elevation of the top of the statue is 60 °and from the same point the angle of elevation of the top of the pedestal is 45°. Find the height of the pedestal

Posted by Sajal Mishra 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Anand Bhairvi 6 years, 3 months ago

This is very simple problem

0Thank You

Lucifer ? Morningstar? 6 years, 3 months ago

0.8(√3+1)

0Thank You

ANSWER

What is the formula of a ki power 4 plus b ki power 4 upon a square into b square

Posted by Shyam Thakur 6 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Can you help me

Posted by Isha Kashyap 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Abhi Sharma 6 years, 3 months ago

Hey

2Thank You

Isha Kashyap 6 years, 3 months ago

Please send basic sample paper

2Thank You

ANSWER

Please send basic paper

Posted by Dileep Kasaudhan 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhinav ? 6 years, 3 months ago

Basic paper..?? Sample paper aap website se download kr lo..

3Thank You

ANSWER

The inner circumfrence of a circular race track is 44 m less than the outer circumference.if the outer circumference is 396m,then find the width of the track (this question for adaya singhy changle without using internet)

Posted by Jayesh King 6 years, 3 months ago

CBSE > Class 10 > Mathematics

10 answers

Jayesh King 6 years, 3 months ago

I am teacher not your age

0Thank You

Riddhi Gaur 6 years, 3 months ago

Aadya Singh is right

0Thank You

☃️? Queen ?☃️ 6 years, 3 months ago

Name mt change krna...achcha naam h apka...???

2Thank You

Aadya Singh ? 6 years, 3 months ago

Vo to sab mere name ki spelling galat likhate h....to mai kya karu...?

4Thank You

☃️? Queen ?☃️ 6 years, 3 months ago

??... spelling hi glt hh aadya singh ki toh...

2Thank You

Aadya Singh ? 6 years, 3 months ago

Is it right...???

2Thank You

Aadya Singh ? 6 years, 3 months ago

Circumference of outer circular track = 396
2×22/7×R = 396
R = 396×7/44
R = 63 m. So, Outer radius = 63m.
Now, the circumference of inner radius = (396-44)
2×22/7× r = 352
r = 352×7/44
r = 56m . So, Inner radius = 56m.
Hence, Width of the track = (Outer radius - Inner radius )= (63-56)m = 7m

3Thank You

Aadya Singh ? 6 years, 3 months ago

By the way...aapko.solution bhi chahiye ya only answer...?

1Thank You

Aadya Singh ? 6 years, 3 months ago

Aap gyi kya preeti ji..??

1Thank You

Aadya Singh ? 6 years, 3 months ago

Mere liye itna specially kyu h..?? ?

2Thank You

ANSWER

The radius of wheel of a truck is 70cm.It takes 250 revolution per minute.Find the speed of the truck in km/hr.

Posted by Jayesh King 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years, 3 months ago

Radius = 70 cm.

No of revolution = 250 / min

No of revolution = 250 × 60 / hour

Now, Circumference = 2 π r

⇒ 2 × 22 / 7 × 70

⇒ 44 × 10

⇒ 440 cm

We have ,

{tex}\sf no \: of \: revolution = \frac{distance}{circumference} \\ \\ \sf \implies distance = 250 \times 60 \times 440 \\ \\ \sf \implies distance = 660000 \: cm \\ \\ \sf \implies distance = \frac{6600000}{100000}km \\ \\ \sf \therefore distance = 66 \: km{/tex}

Speed = distance / time

⇒ speed = 66 km / 1 hour

⇒ speed = 66 km/hr.

0Thank You

ANSWER

Find two consecutive positive integers sum of whose square is 365

Posted by Nivesh Rawat 6 years, 3 months ago

CBSE > Class 10 > Mathematics