Determine the length of a chord of a circle. (There is a simple formula; derive it or look it up.)
the length of the chord subtended by the given angle in a circle of the given radius
angle
radius
radius of a circle, must be > 0
in radians, where 0 <= angle < Math.PI
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Determine the length of a chord of a circle. (There is a simple formula; derive it or look it up.)
Returns
the length of the chord subtended by the given
angle
in a circle of the givenradius