Trigonometry Examples

$\cos (\frac{270}{2}) = \frac{\sqrt{1 + \cos (270)}}{2}$

The left side $- 0.70710678$ does not equal to the right side $0.5$ , which means that the given statement is false.

False

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