Question

A missile is fired at an angle of 75 from the horizontal. At one point, its speed was 900 mph. Find its horizontal velocity in miles per minute. (Round to the nearest hundredth.)

Answer 1

More information is required. The speed varies during flight, so you'd need to know the time or altitude where the missile had the 900 mph speed.

If is is 900 mph at launch, that is 15 miles per minute, and the horizontal component is, and remains, 3.88 miles per minute