Question 5743e

Sep 25, 2016

$2 {\sin}^{2} x$.

Explanation:

I have edited the Problem, as shown above.

The Soln. to the edited Problem is as follows :

The Exp.=(1−cot^2x)/(1+cot^2x)+1#

$= \frac{\left(1 - {\cot}^{2} x\right) + \left(1 + {\cot}^{2} x\right)}{1 + {\cot}^{2} x}$

$= \frac{2}{\csc} ^ 2 x$

$= 2 {\sin}^{2} x$.