Precalculus Examples

$\sec (\frac{13}{3} \cdot π)$

Step 1

Combine $\frac{13}{3}$ and $π$ .

$\sec (\frac{13 π}{3})$

Step 2

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

$\sec (\frac{π}{3})$

Step 3

The exact value of $\sec (\frac{π}{3})$ is $2$ .

$2$