6. What is the value of cos 90º? A. B. - 1 C. 0 D. 1 7. What is the coordinate of sin 45°? A. B. C. 2 D. – 12 - 2 8. What is the value of csc 30°? A. 2 B. - 2 C. -1 D. 1 9. What is the value of tan 45°? A. 2/2 B. - 1 C. 0 D. 1 10. What is the value of sec 60°? A. 2 B. - 2 C. - 1 D. 1 11. Triangle ABC is a 30° -60° - 90° A, If the length of AB is 16 cm, what is the length of BC? A. 32 cm B. 16 cm C. 8 cm D. 4 cm 12. If AB = 9 cm, BC = 5 cm, and AC = 7 cm, what is cos B? 5 7 5 7 A. D. C.-7 9 5 13. If AB = 9 cm, BC = 5 cm, and AC = 7 cm, what is cos A? 5 7 5 B. C. D. For #14 - 15. 14. Find x. A. 5 B. 4 C. 3 D. 2 15. Find b. A. 5√5 B. 4√5 C. 3√5 D. 2√5 A 16. In the triangle PQR, what is the length of PQ? A. 1 cm B. 5 cm C. 9 cm D. 12 cm 8 75 M X b T 2 13 cm H
6. What is the value of cos 90º? A. B. - 1 C. 0 D. 1 7. What is the coordinate of sin 45°? A. B. C. 2 D. – 12 - 2 8. What is the value of csc 30°? A. 2 B. - 2 C. -1 D. 1 9. What is the value of tan 45°? A. 2/2 B. - 1 C. 0 D. 1 10. What is the value of sec 60°? A. 2 B. - 2 C. - 1 D. 1 11. Triangle ABC is a 30° -60° - 90° A, If the length of AB is 16 cm, what is the length of BC? A. 32 cm B. 16 cm C. 8 cm D. 4 cm 12. If AB = 9 cm, BC = 5 cm, and AC = 7 cm, what is cos B? 5 7 5 7 A. D. C.-7 9 5 13. If AB = 9 cm, BC = 5 cm, and AC = 7 cm, what is cos A? 5 7 5 B. C. D. For #14 - 15. 14. Find x. A. 5 B. 4 C. 3 D. 2 15. Find b. A. 5√5 B. 4√5 C. 3√5 D. 2√5 A 16. In the triangle PQR, what is the length of PQ? A. 1 cm B. 5 cm C. 9 cm D. 12 cm 8 75 M X b T 2 13 cm H
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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Subparts 7-9
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