Question

How do you evaluate `cos(cos^-1(1/2))`?

Answer 1

`1/2`

Explanation:

`cos(cos^-1(1/2))` . let `cos^-1(1/2)=A :.cosA=1/2=cos(pi/3) :.A=pi/3 or cos^-1(1/2)=pi/3`
So , `cos(cos^-1(1/2)) = cos (pi/3) =1/2`[Ans]