For a triangle AABC, we have a = 2.6, b = 6.9, and B = 138°. Find angle A (in degrees).

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter2: Parallel Lines
Section2.4: The Angles Of A Triangle
Problem 34E
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For a triangle AABC, we have a = 5.7, b = 4.6, and B = 21°.
Find side c for the smaller triangle. Note that there are two
triangles satisfying the given conditions, and you need to find the
one that has an obtuse angle at A.
Answer:
For a triangle AABC, we have a = 2.6, b = 6.9, and B = 138°.
Find angle A (in degrees).
%3D
Transcribed Image Text:For a triangle AABC, we have a = 5.7, b = 4.6, and B = 21°. Find side c for the smaller triangle. Note that there are two triangles satisfying the given conditions, and you need to find the one that has an obtuse angle at A. Answer: For a triangle AABC, we have a = 2.6, b = 6.9, and B = 138°. Find angle A (in degrees). %3D
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