Evaluate the limit: .
Answer and explanation
Correct answer: D.
- Step 1: Recall the standard fundamental trigonometric limit: .
- Step 2: Rewrite the expression by multiplying and dividing by : .
Answer
.
Why not the others: '3/7' inverts the numerator and denominator coefficients; '0' confuses this limit with ; '1' overlooks the scalar ratio 7/3.
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