the period of cos(kx) is 2pi/k
So, cos(pi x) has period 2
#2 pi/3
1. What is the period of the function?
y = 4 cos pi x
A. 1
B. 2
C. pi
D. 2pi
2. Which represents the reference angle for 2pi/3?
A. 2pi/3
B. pi/3
C. pi/4
D. pi/6
2 answers
Yis
1 answer