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underset(xto0)lim(cos(tanx)-cosx)/(x^(4)...

`underset(xto0)lim(cos(tanx)-cosx)/(x^(4))` is equal to

A

`1/6`

B

`-1/3`

C

`-1/6`

D

`1/3`

Text Solution

Verified by Experts

The correct Answer is:
B
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