A golfer stands 420 ft ​(140 ​yd) horizontally from the hole and 45 ft above the hole​ (see figure.) Assuming the ball is hit with an initial velocity of 120 ​ft/s, at what angle​ (or angles) should it be hit to land in the​ hole? Assume the path of the ball lies in a plane. The ball should be hit at an angle​ (or angles) of _______ degrees.

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