Fill in the unit circle and check your answer with the "Check" button. Correct solutions will be highlighted in green while incorrect will be highlighted in red. You only score a point for having everything correct, so fill it all out before hitting the "Check" button.
The inner green circle is for degrees. Make sure to include the ° even for 0°. You can type deg which automatically turns into °.
The inner red circle is for radians. Make sure to include π even for 0π. You can type pi which automatically turns into π.
The outer points are for (cos(θ), sin(θ)). You can type sqrt which automatically turns into √.
REMEMBER: Fill in the full unit circle before you hit "Check".
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