Question

prove (1 - cos2 0) cosec2 0 =1

Answer 1

(1-cos2o) (cosec2o)= 1

sin2o ( cosec2o) =1

we know that cosec o = 1/ sin o

sin2o (1/sin2o) = 1

by cancelling them we get 1 on LHS

so,

LHS = RHS

hence proved

(o represents theta)