Question

Help!! @mathmate help needed! I need step by step please

Answer 1

Since
`\sin^2x+\cos^2x=1` for all
`x`, you can write as a first step


`(\cos^2\theta\tan^2\theta)/(1-\sin^2\theta)=(\cos^2\theta\tan^2\theta)/(\cos^2\theta)`

Then for
`\cos\theta\\eq0`, you can eliminate both factors of
`\cos^2\theta` in the numerator and denominator to end up with
`\tan^2\theta`.