Getting back to your question, there are various pages on basic trigonometry - I'm not sure if this is all of them, but here are the ones I could find:

http://www.mathsisfun.com/sine-cosine-tangent.html

http://www.mathsisfun.com/sine-graph-exercise.html

http://www.mathsisfun.com/pythagoras.html

If you already know this, I'm sure we can help you with other aspects!

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