29 20 21 Find cos(a) in the triangle. Choose 1 answer: 21 20 R18

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter5: Identities And Formulas
Section5.4: Half-angle Formulas
Problem 13PS: If 270A360, then is cos(A/2) positive or negative?
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29
20
21
Find cos(a) in the triangle.
Choose 1 answer
21
20
R18
Transcribed Image Text:29 20 21 Find cos(a) in the triangle. Choose 1 answer 21 20 R18
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