Asked by Anonymous

An airplane flies 180 miles from point A in the direction 135° and then travels in the direction 240° for 90 miles. Approximately how far is the airplane from A? (Round your answer to the nearest whole number.)
Answered by Reiny
according to my quick sketch you have to use the cosine law
x^2 = 180^2 + 90^2 - 2(180)(90)cos 75°
...
x = appr 179 miles
Answered by Elizabeth
Where did you get the 75 degrees from
Answered by Madelyn
Can somebody explain where the 75 came from please?
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