Thursday, January 28, 2010

1/28/09 - Proofs for Law of Sines, Law of Cosines, and more fun stuff...

Today was more of a theoretical class, we worked with 5 problems from the board, 3 proving the Law of Sines, the Law of Cosines, and the Pythargoren thereom, and 2 involving those theorems, some geometry and trig. We started, but didn't finish covering the last two problems, so you can try to figure them out on your own, and wait for the next post to check your work...

one fact we covered in class that was new to me: to inscribe a triangle in a circle, center the circle around the point of intersection of two of the triangle's perpendicular bisectors don't worry about the third, because all three intersect at the same point)

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