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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hi, can you put the animation of the reference angles on youtube. i found it helpful to teach my students. or could i have you permission to do so?