Question

Prove the following identities?

Cscx-sinx/secx=cos^3x

Answer 1

Couldn't prove because they aren't equal

Explanation:

`(Cscx-sinx)/secx=cos^3x`

`(1/sinx-sin^2x/sinx)/(1/cosx)=cos^3x`
`((1-sin^2x)/sinx)*cosx=cos^3x`
`((cos^2x)/sinx)*cosx=cos^3x`
`cos^3x/sinx=cos^3x`

They are not equal...