Trigonometry Examples

$\cos (30) + \cos (120) + \cos (30) = 1$

Step 1

The left side $1.2320508$ does not equal to the right side $1$ , which means that the given statement is false.

False

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