What is the reference angle for -30°?
5/4 Assignment
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Mathematics
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9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
30°
2.
FLASHCARD QUESTION
Front
What is half a circle in radians?
Back
π
3.
FLASHCARD QUESTION
Front
What is the radius of the unit circle?
Back
1
4.
FLASHCARD QUESTION
Front
What is the reference angle?
Back
The reference angle is the acute angle formed by the terminal side of an angle and the x-axis.
5.
FLASHCARD QUESTION
Front
What are the coordinates of 180° on the unit circle?
Back
-1, 0
6.
FLASHCARD QUESTION
Front
What is the value of π in degrees?
Back
180°
7.
FLASHCARD QUESTION
Front
How do you convert degrees to radians?
Back
Multiply by π/180.
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