This sketch shows the six trigonometric functions (Sine, Cosine, Tangent, Cosecant, Secant and Cotangent) as distances on a unit circle diagram. The angle is defined by the positive x-axis and a point on the circle that can be moved manually or animated. The unit circle is depicted adjacent to a Cartesian coordinate system of the same scale, for an easy visual translation between two important representations of trigonometric functions. Individual functions can be hidden or shown separately.
Keywords: trigonometry, trig functions, sine, sin, cosine, cos, tangent, tan, cosecant, csc, secant, sec, cotangent, cot, geometric, radians, degrees, unit circle diagram, period, animation