7. In which quadrant is the following true? cot 0 < 0 and csc0 < 0 1 b. 2 с. 3 d. 4 а. 8. Which of the following expressions is NOT equivalent to cos 75 a. cos(-75) с. cos 60 cos 15 – sin 60 sin 15 b. sin 90 cos 15 – cos 90 sin 15 d. sin 80 sin 5+ cos 80 cos 5

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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Pls help ASAP. Pls do both.

7. In which quadrant is the following true?
cot e < 0 and csce < 0
1
b. 2
c. 3
d. 4
а.
8. Which of the following expressions is NOT equivalent to cos 75
?
cos(-75)
С.
cos 60 cos 15 – sin 60 sin 15
а.
b. sin 90 cos 15 – cos 90 sin 15
d.
sin 80 sin 5 + cos 80 cos 5
Transcribed Image Text:7. In which quadrant is the following true? cot e < 0 and csce < 0 1 b. 2 c. 3 d. 4 а. 8. Which of the following expressions is NOT equivalent to cos 75 ? cos(-75) С. cos 60 cos 15 – sin 60 sin 15 а. b. sin 90 cos 15 – cos 90 sin 15 d. sin 80 sin 5 + cos 80 cos 5
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