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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

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Aashish Gaurav 6 years ago

LHS

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

Posted by Kalpana Devi 6 years ago

CBSE > Class 10 > Mathematics

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

Posted by Lucifer ? Morningstar? 6 years ago

CBSE > Class 10 > Mathematics

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

Posted by Riddhi Gaur 6 years ago

CBSE > Class 10 > Mathematics

6 answers

Riddhi Gaur 6 years ago

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

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Lucifer ? Morningstar? 6 years 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. ||.

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Kuhu Vats 6 years ago

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

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Lucifer ? Morningstar? 6 years ago

Yes kuhu is right

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Kuhu Vats 6 years ago

May b ek me minus ki jgh plus aaye ga

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Kuhu Vats 6 years ago

Riddhi may b aapka question glt h

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

Posted by Lucifer ? Morningstar? 6 years ago

CBSE > Class 10 > Mathematics

0 answers

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What is formula of triangle

Posted by Satish Official1 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Lucifer ? Morningstar? 6 years ago

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

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Lucifer ? Morningstar? 6 years ago

For Equilateral triangle=√3/4(side)²

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

Posted by Lucifer ? Morningstar? 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Pk . 6 years ago

Multiply kar do yrr....

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Aashish Gaurav 6 years 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

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

Posted by Lucifer ? Morningstar? 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Shreya ... 6 years 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.

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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 ago

CBSE > Class 10 > Mathematics

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Arithmetic progression explain

Posted by Mahek Mb 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Pk . 6 years ago

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

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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 ago

CBSE > Class 10 > Mathematics

0 answers

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2020 cbse sample paper class 10

Posted by Anurag Yadav 6 years ago

CBSE > Class 10 > Mathematics

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Hashmi Azim 6 years ago

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

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How( 2+2=5) ??

Posted by Shivansh . 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 8 months ago

NOT POSSIBLE

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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 ago

CBSE > Class 10 > Mathematics

2 answers

Anand Bhairvi 6 years ago

This is very simple problem

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Lucifer ? Morningstar? 6 years ago

0.8(√3+1)

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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 ago

CBSE > Class 10 > Mathematics

0 answers

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Can you help me

Posted by Isha Kashyap 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Abhi Sharma 6 years ago

Hey

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Isha Kashyap 6 years ago

Please send basic sample paper

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ANSWER

Please send basic paper

Posted by Dileep Kasaudhan 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Abhinav ? 6 years ago

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

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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 ago

CBSE > Class 10 > Mathematics

10 answers

Jayesh King 6 years ago

I am teacher not your age

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Riddhi Gaur 6 years ago

Aadya Singh is right

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☃️? Queen ?☃️ 6 years ago

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

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Aadya Singh ? 6 years ago

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

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☃️? Queen ?☃️ 6 years ago

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

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Aadya Singh ? 6 years ago

Is it right...???

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Aadya Singh ? 6 years 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

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Aadya Singh ? 6 years ago

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

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Aadya Singh ? 6 years ago

Aap gyi kya preeti ji..??

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Aadya Singh ? 6 years ago

Mere liye itna specially kyu h..?? ?

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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 ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years 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.

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Find two consecutive positive integers sum of whose square is 365

Posted by Nivesh Rawat 6 years ago

CBSE > Class 10 > Mathematics