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April 28, 2015

Homework Help: PreCalc - Vectors

Posted by Joe on Tuesday, May 3, 2011 at 12:00am.

An airplane is flying with an airspeed of 660 Kilometers per hour. The wind is blowing from 345 degrees at 35 km/h. What direction should the airplane take so that, with the wind, the plane will be flying in a direction of 72 degrees?

I can compute airspeed and actual direction using law of sines and cosines but not sure how to figure out the requested 72 degree part.

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