Question

an airplane leaves an airport and flies due west 170 miles and then 180 miles in the direction 190˚10'. assuming the earth is flat, how far is the plane from the airport at this time(to the nearest mile)?

Answer 1

ok

Answer 2

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Answer 3

isnt it c^2 = a^2 +b^2

Answer 4

here, the angle C is 39.17+90, and u have a, b, only c left to find, which is the answer

Answer 5

replace them in a2 + b2 - 2ab cos(C) = c2 to find c

Answer 6

120 mi150 mi39.17

Answer 7

use Law of cosines to find "x"