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OpenStudy (anonymous):
imranmeah91 HELP PLEASE! im stuck Solve 4cos2A = 3cosA for 90º≤A≤180º. (Enter only the number.) PLEASE I NEED IT
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OpenStudy (anonymous):
4cos2A = 3cosA
OpenStudy (anonymous):
cos 2A= 3/4 cos A
OpenStudy (anonymous):
Use double angle iden
OpenStudy (anonymous):
its Cos^2
OpenStudy (anonymous):
what?
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OpenStudy (anonymous):
4cos^2A = 3cosA
OpenStudy (anonymous):
um ok
OpenStudy (anonymous):
Does it say anything about solve by hand, b/c it not that easy
OpenStudy (anonymous):
no its doesn't. theres no answers either
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