Answers

2015-08-07T15:13:54+05:30
(1+cosƟ) (1-cosƟ) cosec2Ɵ
= (1-cos2Ɵ) cosec2Ɵ
= sin2Ɵ cosec2Ɵ
= sin2Ɵ x    1       
                 sin2Ɵ

= 1
0