Trigonometry Examples

$\tan (a) \cot (a)$

Step 1

Reorder $\tan (a)$ and $\cot (a)$ .

$\cot (a) \tan (a)$

Step 2

Rewrite $\tan (a) \cot (a)$ in terms of sines and cosines.

$\frac{\cos (a)}{\sin (a)} \cdot \frac{\sin (a)}{\cos (a)}$

Step 3

Cancel the common factors.

$1$