Question

simplify:
sectan/sin

Answer 1

what is the formula for sectan?

Answer 2

\[\sec=\frac1\cos\]\[\tan=\frac\sin\cos\]

Answer 3

\[\displaystyle \frac{1}{\cos(x)} \frac{\sin(x)}{\cos(x)}\frac{1}{\sin(x)} = 1/\cos^2 = \sec^2(x)\]