For Exercises 20 and 21, use the following information. If an object is propelled from
Chapter 14, Problem 20(choose chapter or problem)
For Exercises 20 and 21, use the following information. If an object is propelled from ground level, the maximum height that it reaches is given by h = v2 sin2 _ 2g , where is the angle between the ground and the initial path of the object, v is the objects initial velocity, and g is the acceleration due to gravity, 9.8 meters per second squared. 20. Verify the identity v2 sin2 _ 2g = v2 tan2 _ 2g sec2 .
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