Trigonometry Examples

$\cos (\arctan (\frac{15}{8} + \arctan (- \frac{3}{4})))$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\cos (\arctan (\frac{15}{8} + \arctan (- \frac{3}{4})))$

Decimal Form:

$0.63036749 \dots$