n4akey5Carsha n4akey5Carsha

19-11-2016
Mathematics

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A fire is sighted due west of lookout A. The bearing of the fire from lookout B, 8.2 miles due south of A, is N 33.90°W (meaning 33.90 degrees west of due north). How far is the fire from B (to the nearest tenth of a mile)?

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pkmnmushy pkmnmushy

22-11-2016

Well you will get a right angled triangle Using Cos x = adj/hyp cos33.9 = 8.2/hyp hyp=8.2 / (cos33.9). So it would be 9.9 miles to 1 dp

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