AP PRECALCULUS
Unit Circle Navigator
Navigate the unit circle interactively. Drag or select angles to see exact sine, cosine, and tangent values. Visualize reference angles, quadrant signs, and the right triangle projection.
AP PRECALCULUS
Trig Identities Verifier
Verify trigonometric identities graphically. Select from Pythagorean, double-angle, cofunction, and reciprocal identities to see LHS and RHS overlaid on the same graph with a difference curve.
AP PRECALCULUS
Polar Coordinate Plotter
Plot and explore polar curves interactively. Choose from circles, cardioids, rose curves, spirals, limaçons, lemniscates, and butterfly curves. Adjust parameters and watch animated tracing.
AP PRECALCULUS
Sinusoidal Regression (Real Data)
Fit y = A sin(Bx + C) + D to periodic real-world data. Adjust amplitude, period, phase, and vertical shift with temperature, daylight, and tides presets.