Google Classroom
GeoGebraGeoGebra Classroom

Loci Complex Plane - Arguments

Drag to move the point. Shaded region is the set of z values satisfying the inequality. Click the check boxes to toggle strict/non-strict inequalities. Angle A will always be the smaller one - Angle B will have a minimum value equal to A. Angles are measured in degrees and -180° < A, B < 180° (I know - they should be in radians, but the sliders look nasty with decimal values, and no easy way to display them in fractions of pi) (If you need to see it in radians: right click, then 'Graphics', then choose 'Algebra' option on right hand side, and change angle unit to radians.)