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If a triangle has sides a=5, b=4 and c=6, find cos(C).

If a triangle has sides a=5, b=4 and c=6, find cos(C).

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter5: Similar Triangles
Section5.5: Special Right Triangles
Problem 4E: For the 30-60-90 triangle shown, suppose that XY=2a. Find: a XZ b YZ
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2 8. If a triangle has sides a=5, b=4 and c=6, find cos(C).
Transcribed Image Text:2 8. If a triangle has sides a=5, b=4 and c=6, find cos(C).
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