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Introduction to Trigonometry
CH08 Question Bank
CBSE_CH08_QUESTION_BANK
Grade 10
Question:
In the given right triangle, $\cos\theta$ equals:
$\dfrac45$
$\dfrac35$
$\dfrac43$
$\dfrac34$
$\dfrac45$
$\dfrac35$
$\dfrac43$
$\dfrac34$
Step-by-Step Solution
Key Concept: $\cos\theta=\dfrac{\text{adjacent}}{\text{hypotenuse}}$.
$\cos\theta=\dfrac{BC}{AC}=\dfrac45$. [1.0 Mark]
Correct Answer: $\dfrac45$
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