The Unit Circle Answers

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What is the domain of a sine function?

A
positive numbers
B
All real numbers
C
negative numbers
D
positive numbers including zero
10

What is the domain of a cosine function?

A
irrational numbers
B
All real numbers
C
rational numbers
D
positive integers
11

Which function is illustrated by the following graph?

Question illustration
A
cosine function
B
Sine function
C
Tangent function
D
Arc tangent function
12

Which function is illustrated by the following graph?

Question illustration
A
cosine function
B
Sine function
C
Tangent function
D
Cotangent function
15

Determine the coordinates of the point on the unit circle corresponding to the given central angle. If necessary, round your results to the nearest hundredth.

Question illustration
A
(-0.54, -0.84)
B
(-0.84, 0)
C
(-0.84, -0.54)
D
(1, -0.54)
17

For the given central angle, determine the distance traveled along the unit circle from the point (1, 0).

Question illustration
A
3.67 units
B
1.17 units clockwise
C
1.83 units
D
7.33 units
18

What is the range of a cosine function?

A
irrational numbers
B
negative numbers
C
positive numbers
D
All real numbers between -1 and 1 including -1 and 1

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