Trigonometry Examples

$\frac{180}{π}$

Step 1

Find an angle that is positive, less than $2 π$ , and coterminal with $\frac{180}{π}$ .

Tap for more steps...

Step 1.1

Subtract $2 π$ from $\frac{180}{π}$ until the angle falls between $0$ and $2 π$ . In this case, $2 π$ needs to be subtracted $9$ times.

$\frac{180}{π} + 9 (2 π)$

Step 1.2

Multiply $2$ by $- 9$ .

$\frac{180}{π} - 18 π$

Step 2

Since $\frac{180}{π} - 18 π$ is in the first quadrant, the reference angle is $\frac{180}{π} - 18 π$ .

$\frac{180}{π} - 18 π$