Trigonometry Examples

$\cos^{2} (\frac{3}{5}) - \sin^{2} (\frac{4}{5})$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\cos^{2} (\frac{3}{5}) - \sin^{2} (\frac{4}{5})$

Decimal Form:

$0.16657911 \dots$