2.18 A geometric proof for a trigonometric limit
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2.18 A geometric proof for a trigonometric limit
* Full playlist on Limits and Continuity: https://www.youtube.com/playlist?list=PLlwePzQY_wW8P_I8BFgm0-upywEwTKd8_ A proof that the limit, as x approaches 0, of (sin x)/x is 1, using only high-school geometry and trigonometry. 0:00 Introduction 0:17 Geometric trigonometry 1:49 Comparing areas 4:35 Algebra 6:08 Using Squeeze Theorem
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