Applications of Trigonometry Heights and Distances Chapter 9 Exercise 9.1 Question 12
12. From the top of a 7 m building, the angle of elevation of the top of a cable tower is
and the angle of depression of its foot is
. Determine the height of the tower.
Solution:
It is given that height of building (BC) = 7 m
We want to find height of tower AD.
In
m
We have CD = BE, Therefore, BE=7 m
In
m
Height of Tower (AD) = AE + DE =
m
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