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Applying Lagrange's Mean Value Theorem for a suitable function f(x) in [0, h], we have` f(h) = f(0) + hf'(thetah), 0ltthetalt1`. Then for f(x) = cos x, the value of `underset(hrarr0^+)(limtheta)` is

A

1

B

0

C

`1/2`

D

`1/3`

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The correct Answer is:
C
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