Baba B.
asked 12/05/22If csc(x) = 7/2, (in quadrant I), find...
cos(2x) =
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1 Expert Answer
Yefim S. answered 12/05/22
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5
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Math Tutor with Experience
cos(2x) = 1 - 2sin2(x) = 1 - 2·4/49 = 41/49
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Mark M.
Did you draw and label a diagram? What are the values of sine and cosine?12/05/22