__Category__: Trigonometry"Published in Newark, California, USA"

Solve for the unknown angle for

__Solution__:

The first that we have to do is to reduce the higher angles in order to simplify the given equation. Consider the given equation above

Apply the Sum and Product of Two Angles Formula in order to reduce the higher angles as follows

Equate each factor to zero, we have

for

and

where n = number of revolutions.

for

and

and

where n = number of revolutions.