allerylim(x→0) (sin x) / x equals:
A0
B1
Cx
D∞
Answer & Solution
Correct answer: B. 1
1. This is the fundamental trigonometric limit: lim(x→0) (sin x)/x = 1.
2. Used as a starting point to derive d/dx (sin x) = cos x.
3. Holds with x in RADIANS.
_Source: syllabus Maths Ch 13 "Limits and Derivatives", §13.2 Limits_
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