Andy Schleb's scribe post

We started the class with the Supercorrection Follow-up test. That took the first 30 minutes of class. After that, Mr. Obrien put up 7 problems from the homework on the board. He let us go up to the board and do them, and then we went over each one.

A few key things:

• Use pythagorus to convert sin to cos (sin^2+cos^2=1), so (sin^2=1-cos^2, and vice-versa)

• Remember arithmetic (multiply/dividing fractions, equalizing denominators)

We then began work on a worksheet with four problems on it, to try and understand proofs. The goal was to turn the left hand side of the equation into the right hand side.

Finally, we had a class challenge in which we were given sections of trigonometric proofs. We had to arrange the in the correct order. It was a fun class!