Fill in the first quadrant of 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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