Precalculus Examples

$\csc (\frac{- 7 π}{2})$

Step 1

Move the negative in front of the fraction.

$\csc (- \frac{7 π}{2})$

Step 2

Add full rotations of $2 π$ until the angle is greater than or equal to $0$ and less than $2 π$ .

$\csc (\frac{π}{2})$

Step 3

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

$1$