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Worksheets

Transformations of Trig Functions

Total questions: 25

Worksheet time: 18mins

Name
Class
Date
1.

The __________ represents the distance above or below the midline of a sine or cosine graph; we always take the absolute value of this height.

a)

Period

b)

Vertical Shift

c)

Phase Shift

d)

Amplitude

2.

The period of a sine or cosine graph can be found by ....

a)

It's always 2π

b)

2π/B

c)

B(2π)

d)

2π+B

3.
Which value represents a vertical shift in the following function y=a*sin(bx - c)+d?
a)
a
b)
b
c)
c
d)
d
4.
Which value helps identify the period in the following function y=a*sin(bx-c)+d?
a)
a
b)
b
c)
c
d)
d
5.
What is the period of
y=cos(3x - π) - 5?
a)
π/3
b)
π/6
c)
2π/3
d)
2π/6
6.

Where is the midline for

y=2cos(1/3x +π/6) +2

a)

y = 1/3

b)

y = -2

c)

y = 2

d)

y = 4

7.
What is the period of y=4cos(5x)
a)
2π/5
b)
π
c)
5π/2
d)
5π
8.
What does a negative A value cause?
a)
A negative amplitude
b)
A reflection across the Y axis
c)
No effect
d)
A reflection across X axis
9.
What is the amplitude of the function
f(x) = -3cos x   ?
a)
-3
b)
3
c)
6
d)
-6
10.

Choose the correct equation for the graph.

a)

y=sin⁡(x)y=\sin\left(x\right)

b)

y=sec⁡(x)y=\sec\left(x\right)

c)

y=csc⁡(x)y=\csc\left(x\right)

d)

y=tan⁡(x)y=\tan\left(x\right)

e)

y=cot⁡(x)y=\cot\left(x\right)

11.

Choose the correct equation for the graph.

a)

y=sin⁡(x)y=\sin\left(x\right)

b)

y=sec⁡(x)y=\sec\left(x\right)

c)

y=csc⁡(x)y=\csc\left(x\right)

d)

y=tan⁡(x)y=\tan\left(x\right)

e)

y=cos⁡(x)y=\cos\left(x\right)

12.

Choose the correct equation for the graph.

a)

y=cot⁡(x)y=\cot\left(x\right)

b)

y=sec⁡(x)y=\sec\left(x\right)

c)

y=csc⁡(x)y=\csc\left(x\right)

d)

y=tan⁡(x)y=\tan\left(x\right)

e)

y=cos⁡(x)y=\cos\left(x\right)

13.

  Which of the functions does NOT have a period of 2πWhich\ of\ the\ functions\ does\ NOT\ have\ a\ period\ of\ 2\pi  

a)

y = sin x

b)

y = tan x

c)

y = csc x

14.
What is the phase shift?
y=-2sin(x-π)
a)
π left
b)
π right
c)
none
d)
2π right
15.

What is the amplitude of the graph?

a)

-3

b)

2

c)

-2

d)

3

16.

What is the equation of the midline of the graph?

a)

y = -1

b)

y = 0

c)

y = 3

d)

y = -3

17.

Let f(t) = sin(t) and g(t) = sin(4t). What transformation of f(t) results in g(t)?

a)

Vertical Stretch

b)

Horizontal Stretch

c)

Vertical Compression

d)

Horizontal Compression

18.

Let f(t) = sin(t) and g(t) = sin(t - 4). What transformation of f(t) results in g(t)?

a)

Vertical shift down 4

b)

Horizontal shift right 4

c)

Vertical shift up 4

d)

Horizontal shift left 4

19.

The period of the curve is:

a)

 2π2\pi  

b)

 3π3\pi  

c)

 4π4\pi  

d)

 12π\frac{1}{2}\pi  

20.

What is the period of the equation shown?

a)

3π

b)

2π

c)

3π / 2

d)

2π / 3

21.

Describe the horizontal and vertical shifts.

a)

right 3π/2 , down 5

b)

left 2π/3 , up 5

c)

right 2π/3 , up 5

d)

left 2π , down 5

22.
Write the equation for a sine function with an amplitude of 6 and a period of π/4.
a)
y=6sin(8x)
b)
y=6sin8(x-1)
c)
y=6sin1/4x
d)
y=6sinx
23.

What is the vertical shift for y=4cos⁡12(x+π)−2y=4\cos\frac{1}{2}\left(x+\pi\right)-2  ?


a)

up 2

b)

left 2

c)

right 2

d)

down 2

24.

Write the equation of a cosine graph given the following: 
Midline: y = 0
Amplitude = 3
Reflection over the x-axis
No Phase Shift
Period =  π\pi  

a)

 y=−3cos⁡2xy=-3\cos2x   

b)

  y=−3cos⁡πxy=-3\cos\pi x  

c)

 y=−3cos⁡xy=-3\cos x   

d)

 y=3cos⁡x+2y=3\cos x+2  

25.

What are the amplitude and the period of the graph represented by the equation  y=−3cos⁡ θ3y=-3\cos\ \frac{\theta}{3}   ?

a)

amplitude: -3 ;  period:  π3\frac{\pi}{3}  

b)

amplitude: -3;  period:  6π6\pi  

c)

amplitude: 3;  period:  π3\frac{\pi}{3}  

d)

amplitude: 3;  period:  6π6\pi