Common Core · High school
HSF-TF.A.1
High school — Understand radian measure of an angle as the length of the arc on the unit circle it subtends.
The skill that covers it
What a student should be able to do
- Convert degrees to radians and back.
- Explain why a full turn is 2*pi radians.
- Find arc length and sector area using radians.
- Recognise the common radian measures on sight.