Question

Evaluate the following:

`tan(cos^-1  8/17)`

Answer 1

`tan(cos^-1  8/17)=tan{tan^-1  (sqrt(1-(8/17)^2))/(8/17)}`    `[thereforecos^-1x=tan^-1  ((sqrt(1-x^2))/x)]`

`=tan(tan^-1  (15/17)/(8/17))`

`=15/8`