Question

If sec^2 @( 1+ sin @) ( 1_sin@)=k .find the value of k

Answer 1

k= sec^ 2@ (1+ sin@)(1-sin@)

= Sec^2@(1-sin^2@)

= Sec^2@(cos^2@)

= Sec^2@(1/sec^2@)

K=1