Exploring trigonometric ratios

In this activity you will observe the relationship between the sides of a triangle and its trigonometric ratios.

What to do

  1. Drag any one of points A, C or F to change the shape of the two right triangles ABC and DBF.
  2. Observe and compare the ratios between the sides of the two triangles and the values of their three primary trig functions.

Created with GeoGebra