Question

Question #4c437

Answer 1

multiply numerator & denominator by

`1+sint` and simplify the result.

Explanation:

`(1-sint)/costxx(1+sint)/(1+sint)`

`(1-sin^2t)/(cost(1+sint))`

`=cos^cancel(2)t/(cancel(cost)(1+sint))`

`=cost/(1+sint)`