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23 June, 19:23

Find all solutions to the equation.

7 sin2x - 14 sin x + 2 = - 5

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  1. 23 June, 19:43
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    The solution 14 cos (x) + 7 sin (2x) = 0

    7 (2cos (x) + sin (2x) = 0

    (2cos (x) + 2sin (x) cos (x) = 0

    cos (x) + sin (x) cos (x) = 0

    cos (x) (1+sin (x)) = 0
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