Trigonometry Examples

$\sin (\frac{31 π}{36}) \cos (\frac{11 π}{18}) - \cos (\frac{31 π}{36}) \sin (\frac{11 π}{18})$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\sin (\frac{31 π}{36}) \cos (\frac{11 π}{18}) - \cos (\frac{31 π}{36}) \sin (\frac{11 π}{18})$

Decimal Form:

$0.70710678 \dots$