Trigonometry Examples

$\cos (\frac{π}{4} + \cos (\frac{π}{3}))$

Step 1

The exact value of $\cos (\frac{π}{3})$ is $\frac{1}{2}$ .

$\cos (\frac{π}{4} + \frac{1}{2})$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\cos (\frac{π}{4} + \frac{1}{2})$

Decimal Form:

$0.28153953 \dots$