Precalculus Examples

$\cos (45) \cos (30) = \frac{1}{2} \cdot (\cos (\frac{π}{12}) + \cos (\frac{5 π}{12}))$

Step 1

The left side $0.61237243$ is equal to the right side $0.61237243$ , which means that the given statement is always true.

True