An airplane flies at an altitude of y = 10 miles toward a point directly over an observer (see figure). The speed of the plane is of elevation 0 is changing when the angle is 0 = 45°, 0 = 60°, and 0 = 70°. 600 miles per hour. Find the rates (in radians per hour) at which the ang y mi Not drawn to scale 0 = 45° (a) rad/hr 0 = 60° (b) rad/hr (c) 0 = 70° (Round your answer rad/hr to two decimal places.)

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