Trigonometry via constructive geometry and SVG

This is a series of screenshots primarily for the benefit of the students in the course this summer.

I began the unit by rolling a large wheel, keeping track of both the linear distance and dividing by the radius to produce an angular measure.


The next day I moved into constructive geometry and SVG diagrams as a way to deliver the basic trignometric functions.



The goal was to draw a square circumscribed in a circle using SVG.


The next day the focus shifted from 45 degrees to a 30-60-90 triangle via trying to inscribe an equilateral triangle in a circle using SVG.


The homework was to generate the two triangles seen in the lower right corner above. The solutions are worked out below.
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