Projection (angle, height and distance) Calculator

Calculates the initial angle, maximum height and travel distance of the projection from the initial velocity and flight duration.

Projection (angle, height and distance)
Initial velocity v
Flight duration t
    1. sec
[ Gravity g
    1. m/s2 ]

Initial angle θ
    1.  
    2.  deree
Maximum height h
    1.  
Travel distance l
    1.  
    Projection (angle, height and distance)
    [1-2] /2Disp-Num
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    [1]  2017/12/16 05:18   Male / 20 years old level / An engineer / Useful /
    Purpose of use
    exploring
    Comment/Request
    hi, not sure if its a bug but for "Projection (angle, height and distance) Calculator"
    "l"formula no matter how i actually put in those number by hand or transpose onto a computer do not line up. the distance is indeed correct but not too sure about the formula. if the formula is correct was wondering if you could think of any reason why my computer and hand may not be interpriting it correctly?
    from Keisan
    The "l" formula can be obtained as below.

    i) l = v*cosθ*t
    l2 = v2*cos2θ*t2

    ii)
    0 = v*sinθ - (g*t/2)
    v2*sin2θ = (g*t/2)2

    From i) and ii),
    l = sqrt(v2 - (g*t/2)2) * t
    [2]  2016/08/05 01:02   - / 60 years old level or over / A retired people / Useful /
    Purpose of use
    space station position when visible

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