Question

How to solve this problem?

Answer 1

`LHS=(sectheta+ tantheta)/(cottheta+ costheta)`

`=(sectheta+ tantheta)/(1/tantheta+ 1/sectheta)`

`=(sectheta+ tantheta)/((sectheta+ tantheta)/(tanthetasectheta))`

`=tantheta sectheta=RHS`