Draw the sine squared of an angle
- Author:
- Ryan Hirst
- Topic:
- Circle, Cosine, Right Triangles, Sine, Triangles, Unit Circle
Given an angle α, how to draw a segment of length sin²α or cos²α.
The procedure can also be done in reverse order: from segment length to angle.
Notes:
*(CH)² = (AH)(HB), regardless of the length of the hypotenuse:
http://www.geogebratube.org/material/show/id/31122
*To apply the trigonometric relationships here to an arbitrary right triangle, scale them by the length of the hypotenuse.