What is the definition of the unit circle?
Unit Circle Practice (11.4)
Flashcard
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Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The unit circle is a circle with a radius of 1 centered at the origin (0,0) in the coordinate plane. It is used to define trigonometric functions.
2.
FLASHCARD QUESTION
Front
What is the sine of an angle in the unit circle?
Back
The sine of an angle is the y-coordinate of the point on the unit circle corresponding to that angle.
3.
FLASHCARD QUESTION
Front
What is the cosine of an angle in the unit circle?
Back
The cosine of an angle is the x-coordinate of the point on the unit circle corresponding to that angle.
4.
FLASHCARD QUESTION
Front
What is the value of sin(30°)?
Back
5.
FLASHCARD QUESTION
Front
What is the value of cos(30°)?
Back
6.
FLASHCARD QUESTION
Front
What is the value of sin(π/6)?
Back
7.
FLASHCARD QUESTION
Front
What is the value of cos(π/6)?
Back
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