cos 2 theta is not equal to ..............

`cos 2 theta ` is not equal to ................... A) ` 2 cos ^(2) theta -1` B) `1- 2 sin ^(2) theta` C) `(1+ tan ^(2) theta)/( 1- tan ^(2) theta)` D) `(1- tan ^(2) theta)/(1+ tan ^(2) theta)`

A

` 2 cos ^(2) theta -1`

B

`1- 2 sin ^(2) theta`

C

`(1+ tan ^(2) theta)/( 1- tan ^(2) theta)`

D

`(1- tan ^(2) theta)/(1+ tan ^(2) theta)`

Verified by Experts

The correct Answer is:

C

Similar Questions

Explore conceptually related problems

(3) 1 + tan^2 theta =?

Find the value of (1+tan^(2)theta)/(1+cot^(2)theta)

prove that cos^2theta(1 + tan^2 theta) = 1

(iii) ( 1 + tan^2 theta ) ( 1 + sin theta ) ( 1 - sin theta ) =1

Prove : (tan theta) /(1- cot theta) + (cot theta)/ (1-tan theta) = 1 + tan theta + cot theta

1- 2 sin ^(2) ((pi)/(4) + theta)= ................. A) cos 2 theta B) - cos 2 theta C) sin 2 theta D) - sin 2 theta

cos^4theta- sin^4theta is equal to.............. (a) 1 -2 sin^2(theta/2) (b) 2cos^2theta-1 (c) 1+2sin^2(theta/2) (d) 1+2cos^2theta

Prove that: (cos theta)/(1 + sin theta) = sec theta - tan theta