Trigonometry Examples

$2 \cos^{2} (0) + \cos (0) - 1 = 0$

Step 1

The left side $2$ does not equal to the right side $0$ , which means that the given statement is false.

False

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