The value of `cos[2 tan^(-1)(-7)]` is

A

`49//50`

B

`-49//50`

C

`24//25`

D

`-24//25`

Verified by Experts

The correct Answer is:

D

Similar Questions

Explore conceptually related problems

The value of cos[2tan^(-1)(-7)] is

The value of cos(tan^(-1)(tan2)) is

The value of cos^(-1)(cos(2tan^(-1)((sqrt(3)+1)/(sqrt(4-2sqrt(3)))))) is

The value of sin{tan^(-1) (tan 7pi/6) + cos^(-1)(cos 7pi/3)} is _____.

The value of sin (2 tan ^(-1) "" (1)/(3)) + cos (tan ^(-1) 2 sqrt2) is (p)/(q), then pq is