Trgnmtry

This app is valuable for dynamically relating trigonometric functions in their geometric lengths. Before using this app, I had no real conception of how the six primary trig functions visually related on the unit circle aside from the basic cos & sin distances from axes. But once I started toggling on and off different ones for emphasis, a whole new geometric world of relation was unveiled. For instance, although everyone knows that tan=sin/cos, before seeing dynamic visualisations I had no idea that it mapped to a particular measure of the vertical line TANGENT to the circle, and that its height maps to where the radius is pointing (and some of the more unknown functions deal with lines outside that circumference!?) Maybe that’s trivial, but it was mine blowing for me at the time.

Where is numbers ????? A mathematical app without numbers ?? Dude !