MHF4U - B1.4 Understanding the trigonometric ratios for some special angles
Specific expectation
Even though the angle in the applet is using degree, the value of the ratio does not change given the same angle, no wonder they are in degree or in radian.
GeoGebra 互動數學教室 [url=http://www.geogebra.hk]http://www.geogebra.hk[/url]
Credit
The applet is created by teachers in a school in Hong Kong.[br]Thank you for their generous sharing about the applet.