Question

solve this mate plzzz ​

Answer 1

plz refer to the attachment

Answer 2

$\tt LHS = \frac {1}{1 - tan²\theta} + \frac {1}{1 - cot²\theta} \\ = \tt \frac {1}{sec²\theta} + \frac {1}{cosec²\theta} \\ \tt = {cos²\theta} + {sin²\theta} \\ \tt = 1 =\:RHS \\ \tt (verified)$