What is the period of the function? y=4 cos pi x

A. 1
B. 2
C. pi
D. 2pi

This is the Periodic Functions and Trigonometry Unit Test Part 1, but I'm in honors so some may not be the same. If you have a different one, maybe search question # ten. That might have all of your answers.

1) C. 2
2) D. 215°
3) π/4
4) D. -495°
5) A. 0
6) C. 240°
7) A. π
8) C. 131 ft
9) C. 40 centimeters
10) B. y = 4 sin 8θ
11) B. y = sin π/255 θ
12) C. period = 1/4 π, range = -4 ≤ y ≤ 4, amplitude = 4
13) B. y = 4 cos 2θ
14) B. √3
15) B. 1
16) C. The one that looks like a weird upside down arrow or something
17) D. 380 ft
18) √3/2
19) B. 1 + sin θ
20) D. 45°
21) D. 0.64
22) A. 80°
23) C. π/2, 5π/4, 3π/2, 7π/4
24) A. csc θ = 5/4, sec θ = 5/3

The period of any cosine function is 2PI

2PI=PI*x
x=2

Well, if you wanted a serious answer, the period of the function y = 4 cos pi x is actually D. 2pi.

But hey, let's bring in some humor! The period of this function is like the time it takes for a "Pi" to be reheated in the oven. So, the answer is C. pi! Just remember to use oven mitts when handling mathematical functions. Safety first!

To find the period of a function, you need to determine the distance over which the function repeats. In this case, the given function is y = 4cos(πx).

The general formula for the period of a cosine function is T = 2π/b, where b is the coefficient of x.

In the given function, the coefficient of x is π. Therefore, the period (T) can be calculated as T = 2π/π, which simplifies to T = 2.

So, the answer is B. The period of the function y = 4cos(πx) is 2.

y=4cos50