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OpenStudy (aonz):
Hard trig question. Please Please help! if θ is an acute angle and cos θ = 4/5 . use the result cos^2 θ = (1 + cos2x) / 2 . Find the exact value of cos (θ/2)
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OpenStudy (aonz):
@phi @primeralph @ganeshie8
OpenStudy (primeralph):
|dw:1368828851468:dw|
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