Math/Trigonometry

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Find the exact value of cosθ if sinθ=-2/3, and θis in standard position with its terminal side in Quadrant IV.

  • Math/Trigonometry -

    cos is + in quadrant IV
    2^2+x^2 = 3^2
    x^2 = 5
    x = sqrt(5)
    so
    sqrt(5)/3

  • Math/Trigonometry -

    Thankyouu

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