Question

Prove that `(1-sinx)/secx=cos^3x/(1+sinx)`?

Answer 1

Please see below.

Explanation:

`(1-sinx)/secx`

= `(1-sinx)/secx xx (1+sinx)/(1+sinx)`

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

= `cos^2x/(1+sinx)xxcosx`

= `cos^3x/(1+sinx)`