Trigonometry Examples

$\frac{\tan (69) + \tan (66)}{1 - \tan (69) \tan (66)} = - 1$

Step 1

The left side $- 1$ is equal to the right side $- 1$ , which means that the given statement is always true.

True

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