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Graph the function. 6) y = -3 cos 2x A) B) 3. /2n C) D) |-21 2n -27 27 食 个M

Graph the function. 6) y = -3 cos 2x A) B) 3. /2n C) D) |-21 2n -27 27 食 个M

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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Graph the function. 6) y = -3 cos 2x A) B) 2n C) D) y 1-27 2n -2n
Transcribed Image Text:Graph the function. 6) y = -3 cos 2x A) B) 2n C) D) y 1-27 2n -2n
Expert Solution
Step 1

y=-3cos(2x)

 

1) if  x=π then y= -3 cos(2π)=-3(1)=-3

2) if x=π2 then y=-3cos-2π2=-3(-1)=3

3) if x=0 then y=-3 cos(0)=-3

I just choose some random points which match the graph

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