Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 7 - Section 7.3 - The Ambiguous Case - 7.3 Problem Set - Page 389: 3

Answer

When solving the ambiguous case using the law of sines, the first step is to solve for a missing $angle$. Use the inverse sine function to find the $reference$ angle. Then determine the possible values of the angle itself for both quadrants $I$and $II$.

Work Step by Step

We are given two sides and one angle. By using the Law of sines, we can find the reference angle. $\frac{sinA}{a}=\frac{sinB}{b}$
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