Some Applications of Trigonometry
CH09 Question Bank
CBSE_CH09_QUESTION_BANK
Grade 10
Question:
A vertical pole is $15$ m high, and its shadow is $5\sqrt3$ m long. Find the angle of elevation of the sun at that time.
Step-by-Step Solution
Key Concept: Apply tanθ = height/shadow.
$\tan\theta=\dfrac{15}{5\sqrt3}$. [1.0 Mark]
$=\dfrac{15}{5\sqrt3}=\dfrac{3}{\sqrt3}=\sqrt3$. [1.0 Mark]
$\theta=60^\circ$. [1.0 Mark]
Correct Answer:
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