To find:
Answer to Problem 61E
Explanation of Solution
Given information:
Calculation:
Plot any two points coordinates on the graph and connect the points and the origin to form a triangle.
The central angle for the triangle is
Use the distance formula to evaluate distances of all sides of the triangle.
Use law of cosines to evaluate
The angle
Thus, the
Chapter 7 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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