State if the following is true or false.
If the length of the shadow of a tower is increasing then the angle of elevation of the sun is also increasing.

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False

True

answer is B.

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Detailed Solution

We need to find whether the angle of elevation of the sun is also increasing when the length of the shadow of a tower is increasing.
The angle of elevation is included the angle between the ground and the line joining the top of the tower with the point on the ground.
For the increase in the length of the shadow, the tip of the shadow moves away from the bottom of the tower and the line joining the tip of the shadow and top of the tower inclined more toward the ground, so, the angle between the ground and line decreases or the angle of elevation decreases.
So, the given statement is false and the correct statement will be “If the length of the shadow of a tower is increasing then the angle of elevation of the sun is decreasing”.
Therefore, option 2 is correct.

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