Trigonometry Studio
Angle conversion with a live unit circle, all six functions with exact values flagged, every identity numerically verified, and general solutions of trig equations. Covers §4.5–4.9 of the trigonometry material.
Angle Converter & Six-Function Evaluator
Unit circle: the terminal side at your angle; cos θ and sin θ are the point's coordinates. FIG. T18-1
Identity Explorer — Verified Live
Each identity is evaluated on both sides at your chosen angle; agreement to machine precision is the proof-by-witness.
Inverse Trig — Principal Values
Trig Equation — General Solution
Solve f(x) = k over all real x, with the first several solutions listed.