Unit Circle

Drag the radius around the circle, or use the pencil to type an exact angle and radius or x and y. The legend shows θ, φ (the triangle's other acute angle), x and y (signed), r (the radius), x², y², r² (off by default), cot, sec, csc, sin, cos, tan and the quadrant, with the same names and colours as the table (rename any of them in the settings); the gear opens the settings (snap, angle unit, legend entries), the panel button opens the table and the calculator button opens the calculator.

Settings

Terms

Term	Label	Color	Legend	Table	Chart line	Chart label	Chart value	Graph x	Graph y	Capture
θ					innerouter
φ					innerouter
x					0y
y					0x
r
x²
y²
r²
sin θ
cos θ
tan θ
cot θ
sec θ
csc θ
sec–csc
quadrant

Units

Unit	Format	Legend	Table	Ruler	Major ticks	Minor ticks
Distance
Degrees
Radians
Pi Rads
Tau Rads
Gradians
Rotations
Mils

Tick steps are in the row's unit (1/12 works); a step too small for the zoom falls back to Auto.

Display Default angle ° Default radius Label size Snap to grid Snap to angle ticks Axis labels Grid theme Graph offset

Unit Circle

Settings

Set position

Memory

History