13. , If 0≤0≤2π the minimum value of 1+2 cos- 1+2 cos / is A. - 2 14. B. 0 C. 1 If 0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.5: Trigonometric Graphs
Problem 70E
Question

PLs help ASAP. Pls show all work and steps. Pls circle the final answer also.

13.
,
If 0≤0≤2π the minimum value of 1+2 cos-
1+2 cos /
is
A. - 2
14.
B. 0
C. 1
If 0<x<y<, which of the following MUST be true?
D. 1
I.
sin x<sin y
II.
cos x <cos y
III.
sin x<cos y
A. I only
B. I and II only
C. I and III only
D. I, II, and III
Transcribed Image Text:13. , If 0≤0≤2π the minimum value of 1+2 cos- 1+2 cos / is A. - 2 14. B. 0 C. 1 If 0<x<y<, which of the following MUST be true? D. 1 I. sin x<sin y II. cos x <cos y III. sin x<cos y A. I only B. I and II only C. I and III only D. I, II, and III
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