Precalculus Examples

$\cot (\frac{3}{4} \cdot π)$

Step 1

Combine $\frac{3}{4}$ and $π$ .

$\cot (\frac{3 π}{4})$

Step 2

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cotangent is negative in the second quadrant.

$- \cot (\frac{π}{4})$

Step 3

The exact value of $\cot (\frac{π}{4})$ is $1$ .

$- 1 \cdot 1$

Step 4

Multiply $- 1$ by $1$ .

$- 1$