A person whose eye level is 1.5 m above the ground stands 20 m away from a wall

MATHEMATICS · Subjective · CBSE · Mathematics · Applications of Trigonometry · Applications of Trigonometry

Problem

A person whose eye level is 1.5 m above the ground stands 20 m away from a wall. The top of a clock fixed on the wall is 7.5 m above the ground. Find the angle of elevation of the clock’s top from the person’s eyes, correct to one decimal place.

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