Introduction to Trigonometry
RD Sharma
CBSE
Grade 10
Question:
If $\tan(3x + 30^\circ) = 1$, find the value of $x$.
Step-by-Step Solution
Key Concept: $\tan(3x + 30^\circ) = \tan 45^\circ \Rightarrow 3x + 30 = 45 \Rightarrow 3x = 15 \Rightarrow x = 5^\circ$.
$3x + 30^\circ = 45^\circ \Rightarrow 3x = 15^\circ \Rightarrow x = 5^\circ$. [2.0 Marks]
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🎯 Official CBSE Marking Scheme:
Solving $3x + 30^\circ = 45^\circ \Rightarrow x = 5^\circ$: 2.0 Marks
Correct Answer:
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