First slide

Trignometry

Question

A schematic diagram of a pedestrian overpass is shown in figure. If you walk on the overpass from point A to point B, how far have you walked ?

Moderate

A

60 ft
B

80 ft
C

64 ft
D

100 ft

Solution

Total distance $= \frac{12}{\sin 37 °} + 40 + \frac{12}{\sin 37 °}$
=20 + 40 + 20 = 80 ft

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