To Find the Distance Across a River a Surveyor Chooses $A$

question 64

Essay

To find the distance across a river a surveyor chooses points $A$ and $B$ , $100$ m apart and a reference point $\mathrm { C }$ on the other side of the river. Approximate the distance, $b$ , between $A$ and $\mathrm { C }$ given that $\angle A = 93 ^ { \circ }$ and $\angle B = 62 ^ { \circ }$ .

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