Sine, Cosine w/ Triangles on Unit Circle & Graphing

We then did a "layered approach" We looked at different triangles on geogebra. Let's pick an easy number for the radius. How about 1? Instantly the unit circle appeared. Let's look at the (x,y) coordinate of that point C; but we need axises- Whola - they appear. I then put up a point that represent the angle vs. the sine of the angle. How does this point relate (as I move the slider bar). We then talked about the graph of y=sin(x), y=cosine(x) etc. see. http://eduflection.blog.com/2014/01/10/trigonometry-intro-triangle-finger-prints/

 

Brice Dobler

 
Material Type
Activity
Tags
trignonmetry  sine  cosine  tangent  unit  circle  triangles  definition  of  introduction  trig-function graphing trig trig. Show More…
Target Group (Age)
15 – 18
Language
English (United States)
 
 
GeoGebra version
4.4
Views
941
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