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WAEC Mathematics 2016 Paper
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© africaexams.com
Question : 48
Total: 49
An object is 6m away from the base of a mast. If the angle of depression of the object from the top of the mast is 50
o
, find, correct to 2 decimal places, the height of the mast.
8.60m
7.83m
7.51m
7.15m
Validate
Solution:
In the diagram give,
α
50
o
(alternative angles)
tan
α
=
h
6
h = 6tan
α
= 6tan 50
o
= 6 x 1.1918
= 7.1508
= 7.15m (2d.p)
© africaexams.com
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