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Alternative Definition of a Derivative with Trig

APCALC-1154DI

$\lim _{ x\xrightarrow { } \pi }{ \cfrac { \cos { x } +1 }{ x-\pi } =? } $

A

$-1$

B

$0$

C

$\cfrac{1}{2}$

D

$1$

E

Undefined.