Pre-Calc Exam Notes 13

Pre-Calc Exam Notes 13 - Trigonometric Functions of an...

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Trigonometric Functions of an Acute Angle Section 1.2 13 11. sin A = 3 4 12. cos A = 2 3 13. cos A = 2 r 10 14. sin A = 2 4 15. tan A = 5 9 16. tan A = 3 17. sec A = 7 3 18. csc A = 3 For Exercises 19-23, write the given number as a trigonometric function of an acute angle less than 45 . 19. sin 87 20. sin 53 21. cos 46 22. tan 66 23. sec 77 For Exercises 24-28, write the given number as a trigonometric function of an acute angle greater than 45 . 24. sin 1 25. cos 13 26. tan 26 27. cot 10 28. csc 43 29. In Example 1.7 we found the values of all six trigonometric functions of 60 and 30 . (a) Does sin 30 + sin 30 = sin 60 ? (b) Does cos 30 + cos 30 = cos 60 ? (c) Does tan 30 + tan 30 = tan 60 ? (d) Does 2 sin 30 cos 30 = sin 60 ? 30. For an acute angle A , can sin A be larger than 1? Explain your answer. 31.
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This note was uploaded on 01/21/2012 for the course MAC 1130 taught by Professor Dr.cheun during the Fall '11 term at FSU.

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