Question

There is an electric bulb at 7.5m high on a pole.A man of height 1.5m is standing at a distance 9m from the pole.Find the length of his shadow.​

Answer 1

Step-by-step explanation:

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Answer 2

There is an electric bulb at 7.5m high on a pole. A man of height 1.5m is standing at a distance 9m from the pole, the length of his shadow is 2.25.

Given,

Length of pole = 7.5cm

Height of man = 1.5m

Distance from pole to man = 9m

To find,

Length of his shadow = ?

Solution,

Refer the attachment for better understanding,

sinθ = $\frac{7.5}{9+x} = \frac{1.5}{x}$

7.5x = 1.5(9 + x)

5x = 9 + x

4x = 9

x = $\frac{9}{4}$ = 2.25

Since, the value of x is 2.25.

Therefore, there is an electric bulb at 7.5m high on a pole. A man of height 1.5m is standing at a distance 9m from the pole, the length of his shadow is 2.25.