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Limit of Trigonometric Function : L'Hopital's Rule

Lim of theta as theta approaches zero of (cos theta - 1) / sin theta

Please provide a detailed, step-by-step solution so that I can understand what is happening and will be able to solve similar problems in the future on my own. Thank you.

Solution Summary

L'Hopital's rule is applied to a limit. The solution is detailed and well presented.