April 16 scribe post

Mr. O' Brien reminded us to spend a solid hour on math homework, so that on quizzes we would not be stuck on the problems by not knowing what to do in the beginning as the first step.

We began class with a warm-up:

We were asked to attempt to graph this without technology. So...

This is what we would have gotten if it originally was a positive tan. However, the negative makes it more difficult.

Therefore...

This makes us able to graph this equation by hand.

After the warm up we went over homework problems. We covered #33,77,29,75,

While doing this we went over the identities that we needed. #75 is the most important question on the homework, and there will probably be a question like this on the unit test. Make sure that you know how to do this problem!!! Remember to draw a triangle to help you get through it. If you don't know how to do this problem yet, then go to the download and try to work through it until you think you have more of a handle on it, then try and do it by yourself until you know that you could do this problem by yourself on a quiz or test.

While still working on this problem 75 we started to learn to put the sin, cos, and tan answers into the calculator up on the board. Then, we checked all three of these on our own using our own calculator. The sin, cos, and tan were:

inverse sin(-4/5)
inverse cos(-3/5)
inverse tan(4/3)

Put them all into your calculator and you can see for yourself that they are correct, and that the inverse sin and the inverse tan equal the same value.

The last thing we did in class we all took out our quiz and the homework's it related to Mr. O'Brien came around to people individually to help us understand what we missed.

Our Goals were:
Correct Each..
Quiz questions
either on quiz or in notebook using HW #3,4,5

Class was only an hour because we have the Bunny Bowl later on today.

Collin will be the scribe for next class.