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January 30, 2015

January 30, 2015

Posted by **Marie** on Wednesday, February 3, 2010 at 9:02pm.

Pilot Reem Ahmad's flight plan has her leaving Dulles International Airport and flying a Boeing 727 due east at 450 mph. There is a 65 mph wind with the bearing 60 degrees.

a. Determine the compass heading that Reem should follow.

b. Determine the airplane's ground speed. (Assume the speed with no wind is 450 mph)

- Precalculus -
**bobpursley**, Wednesday, February 3, 2010 at 9:12pmThe E,W component from the wind. Iassume the wind is going toward 060, so the E component of that is 65Cos60

So now, you have plane east velocity + wind east velocity= 450

plane east velocity= 450-65Cos60

calculate that.

The NS component of wind is 65Sin60, and the plane has to eliminate that.

(450-65cos60)SinHeading=-65Sin60

solve for Heading

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