A Civil Engineer Needs to Measure the Length of a Proposed

question 45

Short Answer

A civil engineer needs to measure the length of a proposed tunnel through a mountain. The engineer chooses a point that can be seen from each end of the tunnel and measures the distance to each end of the tunnel to be 3,000 meters and 4,200 meters, respectively. If the angle between the two distances is $113^{\circ}$ what is the length of the tunnel?

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