What is the definition of a reference angle?
Master determining the reference angle from a given angle
Interactive Video
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Mathematics
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9th - 10th Grade
•
Hard
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FREE Resource
This video tutorial explains how to find reference angles for given angles in degree measure. It covers the definition of reference angles, rules for positive and negative angles, and provides examples for angles such as 50, 120, -155, and -20 degrees. The tutorial emphasizes the importance of converting negative angles to positive coterminal angles and using quadrant-specific formulas to determine reference angles.
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7 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the reference angle for 120 degrees?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
How do you determine the reference angle for an angle in the second quadrant?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain how to find the coterminal angle for a negative angle.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the reference angle for -155 degrees?
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Describe the process to find the reference angle in the third quadrant.
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
How do you find the reference angle for an angle of -20 degrees?
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