Two people are driving from the same point. One drives east at 3 mi/h and the other drives north east at 2 mi/h. How fast is the distance between the people changing after 15 minutes? Use cosine law: ?2=?2+?2−2??cos?
Two people are driving from the same point. One drives east at 3 mi/h and the other drives north east at 2 mi/h. How fast is the distance between the people changing after 15 minutes? Use cosine law: ?2=?2+?2−2??cos?
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter5: Trigonometric Functions: Right Triangle Approach
Section5.1: Angle Measure
Problem 87E: Which A winch of radius 2 ft is used to lift heavy loads. If the winch makes 8 revolutions every 15...
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Two people are driving from the same point. One drives east at 3 mi/h and the other drives north east at 2 mi/h. How fast is the distance between the people changing after 15 minutes?
Use cosine law: ?2=?2+?2−2??cos?
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