Posted by **Jackie** on Thursday, September 27, 2012 at 10:15am.

An airplane leaves an airport and flies due west 150 miles and then 170 miles in the direction 210°50'. Assuming the Earth is flat, how far is the plane from the airport at this time (to the nearest mile)

- Math/Trig -
**Steve**, Thursday, September 27, 2012 at 11:35am
150 at 180° = (-150,0)

170 at 210°50' = (-146,-87)

total: (-296,-87)

distance = √(296^2 + 87^2) = 309 mi

- Math/Trig -
**Steve**, Thursday, September 27, 2012 at 11:36am
I am assuming that 0° is east. If you are using 0° = north, then things have to be changed a bit.

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