Trigonometry Examples

$\cot (270)$

Step 1

To convert degrees to radians, multiply by $\frac{π}{180 °}$ , since a full circle is $360 °$ or $2 π$ radians.

Step 2

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

$\cot (90) \cdot \frac{π}{180}$ radians

Step 3

The exact value of $\cot (90)$ is $0$ .

$0 \cdot \frac{π}{180}$ radians

Step 4

Multiply $0$ by $\frac{π}{180}$ .

$0$ radians