The Mach number M of a supersonic airplane is the ratio of its speed to the speed
Question:
(a) Use a half-angle formula to rewrite the equation in terms of cos Î.
(b) Find the angle Î that corresponds to a Mach number of 2.
(c) Find the angle Î that corresponds to a Mach number of 4.5.
(d) The speed of sound is about 760 miles per hour. Determine the speed of an object with the Mach numbers from parts (b) and (c).
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