Estimate the Limit by Graphing the Function for an Appropriate $\lim _ { x \rightarrow - } \frac { 1 - \cos x } { x }$

question 358

Essay

Estimate the limit by graphing the function for an appropriate domain. Confirm your estimate by using L'Hopital's rule.
Show each step of your calculation.
- $\lim _ { x \rightarrow - } \frac { 1 - \cos x } { x }$

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