Question

cosec square plus cot square =1

Answer 1

=1/sin^2x + cos^2x/sin^2x
=1+cos^2 x/sin^2 x
=1+cos^2 x/1-cos^2 x
=(1+cosx)(1+cosx)/(1-cosx)(1+cosx)
=(1+cosx)/(1-cosx)