Draw a diagram. It will be clear that using the law of cosines, the distance d is found using
d^2 = 300^2 + 200^2 - 2*300*200 cos33°
In a school, the church building is 300 m due East of the Assembly Hall. A classroom is 200 m on a bearing or 123° from the Assembly Hall. How far is the classroom from the church ?
3 answers
MATHEMATICS
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