Question

Find the value of `sin(pi/2-cos^(-1)(2/3))`?

Answer 1

`sin(pi/2-cos^(-1)(2/3))=2/3`

Explanation:

As `sin(pi/2-theta)=costheta`

`sin(pi/2-cos^(-1)(2/3))`

= `cos(cos^(-1)(2/3))`

= `2/3`