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26 September, 06:10

How would I find all the solutions to the equation "7*sin^2x-14*sinx+2=-5"?

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  1. 26 September, 07:01
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    Step-by-step explanation:

    Find all solutions to the equation.

    7 sin^2 (x) - 14 sin x + 2 = - 5

    7sin^2 (x) - 14 sin x+7 = 0

    sin^2 (x) - 2sin x+1 = 0

    (sinx-1) (sinx-1) = 0

    sinx=1

    x=π/2+2pi*k, k=integer
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