Radians Degrees Reference Angles

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is a radian?
Back
A radian is a unit of angular measure used in mathematics, defined as the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.
2.
FLASHCARD QUESTION
Front
How do you convert degrees to radians?
Back
To convert degrees to radians, multiply the degree measure by π/180.
3.
FLASHCARD QUESTION
Front
How do you convert radians to degrees?
Back
To convert radians to degrees, multiply the radian measure by 180/π.
4.
FLASHCARD QUESTION
Front
What is a reference angle?
Back
A reference angle is the smallest angle that a given angle makes with the x-axis, always measured as a positive angle.
5.
FLASHCARD QUESTION
Front
Find the reference angle for an angle measuring 310°.
Back
50°
6.
FLASHCARD QUESTION
Front
Find the reference angle for an angle measuring θ = 7π / 5.
Back
2π / 5
7.
FLASHCARD QUESTION
Front
Convert from radians to degrees: 7π / 4.
Back
315°
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