## Monday, February 19, 2007

### Getting Ready For The Test ...

Assume this clock is mathematically correct, i.e. 0 is at the right and the hands move around counterclockwise ... What time is it in radian hours and minutes? ;-)

Some Reviews
What's the connection between circles and triangles? That's what we've been talking about in class.

Trigonometry has something to do with it. I found an excellent site that allows you to play and learn all about it.

I found a really neat site that illustrates the geometric interpretation of sine, cosine, tangent and cotangent that we've talked about in class. Check it out! You can change the lengths of the lines in the figure by clicking on the point on the circle where the "sin x" and "cos x" lengths intersect.

You can do a little review here about how to graph the sine, cosine and tangent functions.

Here is where you can find some excellent interactive review exercises. Try Topics #30, 31, 32 and 34. Omit Topic #33; we'll be covering that material in our next unit.

And finally here are some review questions (and their answers) to help you prepare for the test.

Learn Hard!! ;-)