Anyway, today we talked about a lot of stuff regarding Pre-Cal and Mr. P's childhood. Mr. P didn't didn't teach us any new lessons today. So, basically my blog will just be a re-cap of yesterdays and what we pretty much did today. Just to remind you guys, iPhoto is due tomorrow, so you guys better get it done on time! We have two homeworks due on Monday and the Project Outline for Principia Mathematica is also due, October 25th. (Matching Equations Activity and Trigonometry Review Worksheet) We also have a test on Tuesday, October 26th. So we all better study for it! (Topic: Trigonometry)
Here's an example and a little bit of re-cap from yesterday's lesson:
Step(s): The Easy Way
Step One: Solve 10 plus square root of two divided by two.
5 + cos theta = 5.707106781
Step Two: Move the 5 to the other side and subtract. (Remember, when you move another number to the other side. Always change the sign.)
cos theta = 5.707106781 - 5
cos theta = 0.707106781
Step Three: Solve the equation using the calculator.
Invert cos theta (0.707106781)
Step Four: Use the C.A.S.T Rule to find the reference and related angle.
ANSWER: (45°, 315°)
We got into our groups and talked about our Project Outline. Out of nowhere, Mr. P randomly told the class that there was a fruit fly in his coffee. He took a sip and the fruit fly was still alive. He picked it up with a stick and showed the class. Then, suddenly he gave us an activity to do amongst our group. We had to matched them and solve them afterwards. After everyone figured and solved one equations. He gave it as a homework.
cos2 x + 3 cos x + 2 = 0 // x2+ 3x + 2 = 0
tan2x –tanx = 0 //
cot x cos x = cotx // xy = x
sin x+ 2cos x sin x = 0 // y+2 xy = 0
cos x sin x = 0 // xy=0
sin2 x = 1 // x2 = 1
2 2
Before the class ended, he gave us a trigonometry review sheet for us to study. (Trigonometry Review; Graph each function using degrees.)
HAVE AN AWESOME LONG WEEKEND!
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