
To find: The measure of the reference angle for

Answer to Problem 57SGA
Explanation of Solution
Given information:
Calculation:
We are asked to find the reference angle.
The reference angle is the angle the terminal side makes with the x -axis.
First we need to find a coterminal angle within the
Since we are above
Below is a sketch of our coterminal angle. All coterminal angles have the same reference angle.
In quadrant IV we subtract the angle from
Thus,
Chapter 5 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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