CPM Homework Help : PC Problem 6-78

Prove that $\frac{ \sec x \cdot \tan x } {\sin x } = \sec^2 x$ .

Hint:

Rewrite the expression on the left using only sine and cosine.

Step:

$\frac{\frac{1}{\cos x}\cdot\frac{\sin(x)}{\cos(x)}}{\sin(x)}$