Question

how do i do this?

Answer 1

Hint: reduce tan(x) and sec(x) in terms of sin(x) and cos(x).
Cancel terms as appropriate and check the result.

Answer 2

Convert Tan(x) and Sec(x) into terms of Cosine and Sine.

Answer 3

\[Tan(x) = \frac{ Sin(x) }{ Cos(x) }\]
\[Sec(x) = \frac{ 1 }{ Cos(x) }\]