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January 31, 2015

January 31, 2015

Posted by **Nat** on Sunday, May 18, 2008 at 12:20pm.

A plane with an air pf 192 miles per hour is headed on a bearing of 121 degrees. A north wind is blowing ( from north to south ) at 15.9 miles per hour. Find the ground speed and the actual bearing of the plane.

- Math -
**Damon**, Sunday, May 18, 2008 at 3:44pmheading 121 - 90 = 31 degrees south of east

South speed = 192 sin 31 + 15.9 = 114.8

East speed = 192 cos 31 = 164.5

tan of angle S of E = 114.8/164.5 = .6979

angle S of E = 34.9

so course made good is 90+34.9 =124.9 degrees

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