   Chapter 11.4, Problem 10E Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

For Δ A B C (not shown), suppose you know that a = 3 ,   α = 57 ∘ ,  and  β = 84 ∘ .a) Explain why you do not need to apply the Law of Sines or the Law of Cosines to find the measure of γ .b) Find γ .

To determine

a.

To explain:

Why applying Law of sines or Law of cosines is not possible to find the measure of angle γ.

Explanation

Given,

For ABC

a=3, α=57, and β=84

In the Law of sines, to find the measure γ we must have the measures a, c and the angle α (or) the measures b, c and the angle β

To determine

b.

To find:

The measure of angle γ.

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