09/03/2009 9B

First we corrected the homework from page 422 numbers 8 to 26 except 10 and 23. Mrs. Saatkamp also corrected some of the exercises on the board, and the one the majority of the class needed was 26, which the answer was 13.7.

After that, we started lesson 8-5:
this lesson talks about the Sine Rule (our book will call it: Law of Sines)

Proof:

After learning this law we did 2 exercises to practice:
1)

We had a triangle with the measure of two angles and one side and we had to "solve the triangle" using the Sine Rule, which means to find all the missing information, sides and angles.

2)


We had the measure of two angles, one side, and we had to find the altitude.


Our Homework is P.429 # 10-26 even + 27

Hints: - SOH CAH TOA is only for right triangles
- WE usually will round to the nearest tenth the decimals of this lesson