Converting degrees to radians is one thing (multiply by ). But remembering the standard reference angles in radians is a bit more of a challenge.
If you tap into you basic counting nature, it gets easier.
Counting Reference Angles in Radians
I made an animation showing how to “count” reference angles in radians.
Notice the way the angles count around using the numerator of the fraction, while holding the denominator constant:
Can you use it?
How about it? Will you be able to use this to teach reference angles?
Share your thoughts in the comments!
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