Posted by Melinda on Tuesday, January 24, 2012 at 9:08pm.
If a plane takes off on runway 31 (N 31o W) and flies 4 miles, then makes a right (90o) turn and flies 11 miles, what bearing will the traffic controller use to locate the plane?

Trig  Steve, Wednesday, January 25, 2012 at 12:36pm
After making the first leg, the plane is at
(4sin31°,4cos31°) = (2.06,3.43)
From there, the plane flies at W31°S,
moving another (11cos31°,11sin31°) = (9.43,5.67),
ending up at (11.49,2.24)
The bearing is W11°S
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