Find the Reference Angle (-7pi)/4

$\frac{- 7 π}{4}$

Step 1

Find an angle that is positive, less than $2 π$ , and coterminal with $\frac{- 7 π}{4}$ .

Add $2 π$ to $\frac{- 7 π}{4}$ .

$\frac{- 7 π}{4} + 2 π$

The resulting angle of $\frac{π}{4}$ is positive and coterminal with $\frac{- 7 π}{4}$ .

$\frac{π}{4}$

Step 2

Since $\frac{π}{4}$ is in the first quadrant, the reference angle is $\frac{π}{4}$ .

$\frac{π}{4}$