What is the unit circle?
The Unit Circle
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 unit centered at the origin (0,0) in the coordinate plane.
2.
FLASHCARD QUESTION
Front
What are the coordinates of the point on the unit circle at 0°?
Back
(1, 0)
3.
FLASHCARD QUESTION
Front
What are the coordinates of the point on the unit circle at 90°?
Back
(0, 1)
4.
FLASHCARD QUESTION
Front
What are the coordinates of the point on the unit circle at 180°?
Back
(-1, 0)
5.
FLASHCARD QUESTION
Front
What are the coordinates of the point on the unit circle at 270°?
Back
(0, -1)
6.
FLASHCARD QUESTION
Front
In which quadrants is cosθ positive?
Back
In the 1st and 4th quadrants.
7.
FLASHCARD QUESTION
Front
In which quadrants is sinθ positive?
Back
In the 1st and 2nd quadrants.
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