Precalculus Examples

$\csc (\frac{3 π}{2})$

Step 1

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

$- \csc (\frac{π}{2})$

Step 2

The exact value of $\csc (\frac{π}{2})$ is $1$ .

$- 1 \cdot 1$

Step 3

Multiply $- 1$ by $1$ .

$- 1$