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A baseball is thrown with an initial velocity of magnitude v at an angle of 21.8 with respect to the horizontal (x) direction. At the same time, a second ball is thrown with the same initial speed at a different angle A with respect to x. If the two balls land at the same spot, find angle A.


    The range is
    X = (V^2/g)*sin(2A)
    where A is the angle measured abouve horizontal.

    You get the same value of sin2A, and range, if 2A is 43.6 or 136.4 degrees.

    Therefore the two angles A are
    21.8 and 68.2 degrees. The two angles are complementary.

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