Introduction to Trigonometry
RD Sharma
CBSE
Grade 10
Question:
If $3 \cos \theta = 5 \sin \theta$, then the value of $\tan \theta$ is:
(a) $\dfrac{3}{5}$
(b) $\dfrac{5}{3}$
(c) $\dfrac{3}{4}$
(d) $\dfrac{4}{5}$
Step-by-Step Solution
Key Concept: $\tan \theta = \dfrac{\sin \theta}{\cos \theta} = \dfrac{3}{5}$.
$\tan\theta = 3/5$. [1.0 Mark]
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🎯 Official CBSE Marking Scheme:
Evaluating $\tan \theta = 3/5$: 1.0 Mark
Correct Answer: $\dfrac{3}{5}$
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