Enter a problem...

# Trigonometry Examples

,

Graph each side of the equation. The solution is the x-value of the point of intersection.

, for any integer

Plug in for and simplify to see if the solution is contained in .

Plug in for .

Simplify.

Multiply .

Multiply by .

Multiply by .

Add and .

The interval contains .

Plug in for and simplify to see if the solution is contained in .

Plug in for .

Simplify.

Multiply .

Multiply by .

Multiply by .

Add and .

The interval contains .