JEE Math Practice Question
$$\mathop {\lim }\limits_{x \to 0} {{\cos (\sin x) - \cos x} \over {{x^4}}}$$ is equal to :
- A.$${1 \over 3}$$
- B.$${1 \over 4}$$
- C.$${1 \over 6}$$
- D.$${1 \over 12}$$
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