Visualize sin, cos, tan on the unit circle in real-time
A circle of radius 1 centred at the origin. Any point on the circle at angle θ has coordinates (cos θ, sin θ). The tangent function equals sin θ / cos θ and can be visualised as the vertical line segment from (1, 0) to where the radius line extended meets x = 1. Special angles (30°, 45°, 60°, etc.) have exact fractional values — try snapping to them!