Question

tan²/(sec -1)² = 1+cos/ 1-cos

Please prove this Very Important​

Answer 1

Step-by-step explanation:

Tan^2/(Sec-1)^2

= (Sec^2-1)/(Sec-1)^2

= (Sec -1)(Sec +1)/(Sec -1)^2

= Sec +1/Sec -1

=1+Cos/1- Cos..

Hope it will help you....