SOLUTION: An airplane travels at 165km/h for 3 hr in a direction of 174 from a local airport. At the end of this time, how fast east of the airport is the plane (to the nearest kilometer)?
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Question 1135346: An airplane travels at 165km/h for 3 hr in a direction of 174 from a local airport. At the end of this time, how fast east of the airport is the plane (to the nearest kilometer)? Answer by greenestamps(13203) (Show Source):
Assuming your direction is measured clockwise from due north, the angle in trigonometry is -84 degrees. The distance east of the starting point is the total distance, multiplied by the absolute value of the cosine of -84 degrees.
