7.1 Practice Problems
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
How many degrees is π/2 radians?
Back
90°
2.
FLASHCARD QUESTION
Front
Which point is the center of the unit circle?
Back
(0,0)
3.
FLASHCARD QUESTION
Front
What is the radius of the unit circle?
Back
1
4.
FLASHCARD QUESTION
Front
What is sin 45°?
Back
√2/2
5.
FLASHCARD QUESTION
Front
What are the exact coordinates of 3π/4 on the unit circle?
Back
(−√2/2, √2/2)
6.
FLASHCARD QUESTION
Front
What is the relationship between radians and degrees?
Back
180° = π radians.
7.
FLASHCARD QUESTION
Front
What is the value of cos 0°?
Back
1
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