In Exercises 67-78, determine the limit of (he trigonometric function (if it exists). 8

Chapter 1, Problem 78

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In Exercises 67-78, determine the limit of (he trigonometric function (if it exists). 8. .i-ji) lim ^sin 3a 3(1- cos a) 68. Hi 70. 72. lim 74. Inn it> see .1,-1, cos A" Wtan tanH X 76. lim 1 - tan V Hint: Find Inn > 7r/4 Sm V COS A" !sin2A \/ 3a 2a /\3 sin 3a

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