Google Клас
GeoGebraGeoGebra Клас

Discovering Trig Functions and Identities

Above is a modification of another applet https://www.geogebra.org/m/j4uterwk by Tim Brzezinski (https://www.geogebra.org/u/tbrzezinski) . Animations with labeling are added to guide students to discover tangent, secant, cotangent, cosecant as segment lengths using similar triangles.