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March 29, 2017

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Find all the solutions of 2 sinx=1-cosx in the interval from 0° ≤x<360°

  • mathematics - ,

    4 sin^2 = 1 - 2cos + cos^2
    4 - 4 cos^2 = 1 - 2cos + cos^2
    5cos^2 - 2cos - 3 = 0

    cosx = 1 or -.6

    x = 0 or 126.86°

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