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Trigonometry Trigonometric riddle

chileflora

New member
Feb 9, 2019
1
Hi, I got a problem I am trying to solve.

An airplane flies at a fixed air speed which is unknown. There is a wind with unknown heading and unknown speed. The airplane has a known ground speed and direction. The airplane changes heading (with reference to ground), and now there is a different ground speed and direction. How to determine on basis of this information (two sets of ground speeds and directions) the wind strength and wind direction? The speed of the airplane with reference to air does not change.
 
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