cos theta = 4/5 find theta/2 when theta lies in Q IV

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter6: Equations
Section6.2: More On Trigonometric Equations
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cos theta = 4/5 find theta/2 when theta lies in Q IV
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