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Some Applications of Trigonometry

CH09 Question Bank

CBSE_CH09_QUESTION_BANK

Grade 10

Question:

A pole casts a shadow of length equal to its own height. Find the angle of elevation of the sun at that time.

Step-by-Step Solution

Key Concept: When height equals shadow length, tanθ = 1.

Let height $=$ shadow $=x$. Then $\tan\theta=\dfrac{x}{x}=1$. [1.0 Mark]

$\theta=45^\circ$. [1.0 Mark]

Correct Answer:

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