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3 count AB and C are such that the distance between A and B is 50km and the distance between A and C is 90km. if the bearing of B from A is 075 degree and the bearing of C from A is 310 degress. find the a distance B and C find the distance between B and C and the bearing C from B

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To find BC, use the law of cosines; the angle at A is 100°
the vector from B to C is <-107.2,25.71>
so the bearing is 270° + arctan(25.71/107.2) = 283.4°
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