Question

Anaeroplane flies from G to a city h on a bearing of 150degree the distance between G and H is 300km it then flew a bearing of 60degree to J a distance of 450km. Calculate G to J
use the law of cosines.
GH^2 = 300^2 + 450^2 - 2*300*450 cosθ
so find θ, the angle between the two segments, and plug it in.

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