What is the definition of the unit circle?
Unit circle
Flashcard
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Mathematics
•
9th 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.
2.
FLASHCARD QUESTION
Front
What is the radius of the unit circle?
Back
1
3.
FLASHCARD QUESTION
Front
What is the value of tan(0°)?
Back
0
4.
FLASHCARD QUESTION
Front
What is the value of cos(5π/6)?
Back
-√3/2
5.
FLASHCARD QUESTION
Front
What radian measure corresponds to the point (−√2/2, −√2/2) on the unit circle?
Back
5π/4
6.
FLASHCARD QUESTION
Front
What is the value of sin(π/4)?
Back
7.
FLASHCARD QUESTION
Front
What is the relationship between the coordinates of a point on the unit circle and the angle θ?
Back
For a point (x, y) on the unit circle, x = cos(θ) and y = sin(θ).
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