Trigonometry Examples

$\frac{\tan (10) + \tan (20)}{1 - \tan (10) \tan (20)}$

Step 1

The unit circle can be used to find the values for exact angles.

Not an exact value

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$