A plane travels 170 miles at a heading of N 41 degrees W. It then changes direction and travels 165 miles at a heading of N 70 degrees W. How far is the plane from its original position?
A plane travels 170 miles at a heading of N 41 degrees W. It then changes direction and travels 165 miles at a heading of N 70 degrees W. How far is the plane from its original position?
Hint: Draw a picture.
You should end up with a triangle with and , and the angle between them .
Use the cosine rule to find
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Last edited by Prove It; Apr 23rd 2009 at 11:20 PM.