39.
A statue 3.6 m tall, stands on top of a pedestal. From a point on the
ground, the angle of elevation of the top of the statue is 60° and from the
same point, the angle of elevation of the top of the pedestal is 45°. Find
the height of the pedestal.
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Answer:
That one's easy. All u need is a lil knowledge about the basic of trigonometry and there you go.
Here lemme show you:
Step-by-step explanation:
Let's assume the height of pedestal be h and the distance of point from ground to statue's foot be d.
tan(60°) = (h + 3.6)/d
√3 = (h + 3.6)/d
Now,
tan(45°) = h/d
1 = h/d
therefore,
h = d
and,
h(√3 - 1) = 3.6
0.732 h = 3.6
h = 4.9
i. e., 5 metres approx
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