SOLUTION: A plane heads due north with an airspeed of 400km/h while an 80km/h wind blows to the east. Suppose the pilot wanted to end up going north. At what upwind angle must she head?

Question 1092914: A plane heads due north with an airspeed of 400km/h while an 80km/h wind blows to the east. Suppose the pilot wanted to end up going north. At what upwind angle must she head?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A plane heads due north with an airspeed of 400km/h while an 80km/h wind blows to the east. Suppose the pilot wanted to end up going north. At what upwind angle must she head?
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It's a right triangle.
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The hypotenuse is 400.
The side for the wind is 80.
The sine of the angle is 80/500
Angle =~ 11.5 degs
--> a heading of 348.5, or 349 degs
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Aircraft use knots, not km/hr.
Pilots don't use fractions of degrees.
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PS Winds are given in the direction they're from.
This one would be 270 @ 42 knots.
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People who don't know the subject should not write math problems.

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