# trig

An airplane has air speed of 540 mph and a heading of 50*. The wind is blowing from the north at 27 mph. Find the plane's ground speed and course direction.

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1. 540 @ 50° = <413.66,347.11>
wind is <0,-27>
add them up to get <413.66,320.11>
which is 523 @ 37.7°

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