Posted by **nina** on Monday, January 6, 2014 at 9:59am.

Two Airplanes leave an airport at the same time on different runways. One flies on a bearing of N66degreesW at 325 miles per hour. The other airplane flies on a bearing öf S26degreesW at 300 miles per hour. How far apart will the airplanes be after 2 hours?

- trig -
**Reiny**, Monday, January 6, 2014 at 11:07am
After you make your sketch, it should be simple to calculate the angle between their flight-paths to be 88° , and after 2 hours the distance covered would be

650 and 600 miles. So a direct application of the cosine law ....

d^2 = 650^2 + 600^2 - 2(650)(600)cos88°

= ...

d = √.....

I get appr 869 miles

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