T 55. а. сos TT 56. а. sin 97T b. cos 9TT b. sin 57. a. tan TT TT 58. а. cot- 2 b. tan 177 15 b. cot- 2 59. a. sin 4 7TT 60. а. cos 4 477T b. sin 4 47T b. cos 4 In Exercises 61-70, use a calculator to find the value of i trigonometric function to four decimal places. 61. sin 0.8 62. cos 0.6 63. tan 3.4 64. tan 3.7 65. csc 1 66. sec 1 67. cos 10 68. sin 10 TT 69. cot 12 70. cot 18 Practice Plus In Exercises 71-80, let sin t = a, cos t = b. and tan t = C. Write each expression in terms of a, b, and c. 71. sin(-t) - sin t 73. 4 cos(-t)- cos t - tan t 72. tan(-t) 74. 3 cos(-t) cos t
T 55. а. сos TT 56. а. sin 97T b. cos 9TT b. sin 57. a. tan TT TT 58. а. cot- 2 b. tan 177 15 b. cot- 2 59. a. sin 4 7TT 60. а. cos 4 477T b. sin 4 47T b. cos 4 In Exercises 61-70, use a calculator to find the value of i trigonometric function to four decimal places. 61. sin 0.8 62. cos 0.6 63. tan 3.4 64. tan 3.7 65. csc 1 66. sec 1 67. cos 10 68. sin 10 TT 69. cot 12 70. cot 18 Practice Plus In Exercises 71-80, let sin t = a, cos t = b. and tan t = C. Write each expression in terms of a, b, and c. 71. sin(-t) - sin t 73. 4 cos(-t)- cos t - tan t 72. tan(-t) 74. 3 cos(-t) cos t
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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Question
Transcribed Image Text:7:06 1
37m
53. a. sin
54. а. сoS
Page 548.jpg
b. sin
COS
T
55. а. сos
TT
56. a. sin
97T
b. cos
9TT
b. sin
2.
57. a. tan TT
T
58. a. cot
2
b. tan 177
15
b. cot
2
59. a. sin
4
60. а. сos
4
47TT
b. sin
4
47T
b. cos
4.
In Exercises 61-70, use a calculator to find the value of in
trigonometric function to four decimal places.
61. sin 0.8
62. cos 0.6
63. tan 3.4
64. tan 3.7
65. csc 1
66. sec 1
67. cos
10
68. sin
10
T
69. cot
12
70. cot
18
Practice Plus
In Exercises 71-80, let
sin t = a, cos t = b. and tan t = C.
Write each expression in terms of a, b, and c.
71. sin(-t) - sin t
73. 4 cos(-t)- cos t
72. tan(-t)
- tan t
74. 3 cos(-t)- cost
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