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kakasveta [241]

3 years ago

6

An airplane leaves an airport and flies due west 180 miles and then 160 miles in the direction S79.17˚W. How far is the plane fr

om the airport at this time (to the nearest mile)?

1 answer:

suter [353]3 years ago

5 0

Using the cosine rule

x^2 = 180^2 + 160^2 - 2.160.180 cos 169.17

= 114574.09

x = sqrt 114574.09 = 338 miles to nearest mile

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