Trigonometric Function Lines Interactive Demo

This GeoGebra example dynamically illustrates trigonometric lines generated from the unit circle. Core concepts include trigonometric definitions, 3D vector operations, equation solving, incircle properties, pyramid structures, and hyperbolic loci. Construction uses Intersect for intersections, Circle for circular paths, Rotate for transformations, OrthogonalLine for perpendiculars, Ray and Line for directional elements, Segment for bounded segments, plus interactive buttons. Ideal for high-school advanced math and undergraduate precalculus coordinate geometry courses.