Polar Equations: r = 2 + 3sin(x), r = 4cos(2x)
Angle Lines: x = pi/4
Points: (3, pi/6) — format is (r, θ)
Sliders: Type r = a*sin(b*x) — unknown letters become sliders.
Constants: pi (π), e (Euler's number)
Functions: sin, cos, tan, sec, csc, cot, asin, acos, atan, sqrt, abs, log (base-10), ln
Implicit multiply: 2sin(x) = 2*sin(x), 3x = 3*x
Trace: Click the ▸ arrow on an expression to trace the curve with a θ slider.
Navigate: Drag to pan, scroll to zoom. Hover curves for coordinates.
Tip: Type x for the angle variable — it displays as θ. Negative r values plot correctly.