The angle of depression of a point on the groun... - WAEC Mathematics 1989 Question
The angle of depression of a point on the ground from the top of a building is 20.3o. If the foot of the building is 40m, calculate the height of the building, correct to one decimal place
A
37.5m
B
28.1m
C
27.8m
D
14.8m
correct option: d
Tan 69.7 = 40/h
h =
40/tan 69.7 =
40/2.703 h = 14.79 = 14.8
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