- #1

Orange-Juice

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Wouldn't the sine function be undefined at pi/2 since at that point there would be no triangle in the unit circle, only a straight line along the y-axis? The hypotenuse of a right triangle must always be the longest side of the triangle so I don't see how the sine function can ever give you a value of one. Is it simply taken to be one at pi/2 for the sake of continuity? Thanks

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