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Mathematics · JEE | LIMITS AND DERIVATIVES

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The limit \( \lim_{x \to 0} \frac{\sin x}{x} = 1 \) where \( x \) is measured in radians. Reason (R): The ratio of the chord length to arc length approaches 1 as the central angle approaches 0. In the light of the above statements, choose the correct answer from the options given below:

  1. A
    Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. B
    Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. C
    (A) is true but (R) is false.
  4. D
    (A) is false but (R) is true.
View Answer & Solution

Correct answer · Option A

Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation

Both the standard limit \( \lim_{x \to 0} \frac{\sin x}{x} = 1 \) and its geometric reasoning via circular arcs and chords are correct and logically linked.
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