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lim(x rarr pi/2) (a^(cotx)-a^(cosx))/(co...

`lim_(x rarr pi/2) (a^(cotx)-a^(cosx))/(cotx-cosx), a gt 0` is equal to

A

`log_(e)(pi/2)`

B

`log_(e)2`

C

`log_(e)a`

D

a

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The correct Answer is:
C
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