Precalculus Examples

$\sin (2 x) \csc (2 x) - \cos (2 x)$

Step 1

Reorder $\sin (2 x)$ and $\csc (2 x)$ .

$\csc (2 x) \sin (2 x) - \cos (2 x)$

Step 2

Rewrite $\sin (2 x) \csc (2 x)$ in terms of sines and cosines.

$\frac{1}{\sin (2 x)} \sin (2 x) - \cos (2 x)$

Step 3

Cancel the common factors.

$1 - \cos (2 x)$