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sin 2x 29. sin x cos 2r = sec x cos X

sin 2x 29. sin x cos 2r = sec x cos X

Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Answer question 29

N- NI- 24. cos 40 = 8 cos“ e - 8 cos e + 1 58. cot 0 = In Exercises 25-32, verify each identity. 25. costx - sin' x Cos 2r 59. sin 0 = 26. 1 + cos 2x + 2 sinx = 2 61. sec 0 = 1 + sin 2x 27. cos x + sin x cos 2r sin x cos x - sinx In Exercises cos 2r 28. sin 2r csc 2x 63. ( sin cos X sin 2x 29. sin x cos 2r sec x 64. sin COs X cos 3x 30. sin 3x cos 2r sin 3x cos x sin x 65. 2 cos? COS X sin 3x 31. tan 2x + tan x = 66. 2 sin? 2. cos 2r cos x 32. tan 2x - tan x = tan x sec 2x 67. tan In Exercises 33-42, use the power-reducing identities to rewrite each expression to one that contains a single trigonometric func- tion of power 1. 68. tan
Transcribed Image Text:N- NI- 24. cos 40 = 8 cos“ e - 8 cos e + 1 58. cot 0 = In Exercises 25-32, verify each identity. 25. costx - sin' x Cos 2r 59. sin 0 = 26. 1 + cos 2x + 2 sinx = 2 61. sec 0 = 1 + sin 2x 27. cos x + sin x cos 2r sin x cos x - sinx In Exercises cos 2r 28. sin 2r csc 2x 63. ( sin cos X sin 2x 29. sin x cos 2r sec x 64. sin COs X cos 3x 30. sin 3x cos 2r sin 3x cos x sin x 65. 2 cos? COS X sin 3x 31. tan 2x + tan x = 66. 2 sin? 2. cos 2r cos x 32. tan 2x - tan x = tan x sec 2x 67. tan In Exercises 33-42, use the power-reducing identities to rewrite each expression to one that contains a single trigonometric func- tion of power 1. 68. tan
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