Trigonometry Examples

$\sin (52) \sin (68) - \sin (47) \cos (77) - \cos (65) \cos (81)$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\sin (52) \sin (68) - \sin (47) \cos (77) - \cos (65) \cos (81)$

Decimal Form:

$0.5$