Question

Question #7e3cb

Answer 1

`sinxtanx`

Explanation:

An important fact to note here is that:
`sin^2x+cos^2x=1`
Therefore:
`sin^2x=1-cos^2x`

So if we put this into the equation given:
`(1-cos^2x)/cosx=sin^2x/cosx`
`=sinx*sinx/cosx`
`=sinx*tanx`

If you need explanation as to why `sin^2x+cos^2x=1`, please comment below