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Wednesday, February 08, 2006

Scribe #3

Hi guys this Abdi if u don't know me and today I'm the scribe. We had 2 classes today. On the morning class which is period 2 we started off with Mr. K writing some problems on the board and we had to solve them.

Questions:

1. Find the coterminal angle for:
a) -45 degrees b) Pi radians c) 240 degrees d) 10Pi/3 radians

2. Convert to degrees:
a)4.21 b) 11Pi/3

3. Find the missing side and the value of Sin. of theta, cos. of theta, and tan. of theta:
a)




b)



Answers:

1. a) 315 degrees b) 3Pi or -Pi and more c) -120 d) 4Pi/3, -2Pi/3, 16Pi/3, and more.
2. a) D/180 = R/Pi
theta/180 = 4.21/Pi
theta = 757.8/Pi
theta = 241.2152 degrees
b) D/180 = 11Pi/3/Pi
theta = 11Pi/3 * 1/Pi
theta = 1980/3
theta = 660 degrees

3. a) 8 square = 4 square + X square
64 = 16 + X square
square root of 48 = X
4 square root of 3 = X
sin. theta = 4/8 = 1/2
cos. theta = 4 square root of 3/8 = square roof of 3/2
tan. theta = 4/ 4 square roof of 3 = 1/square roof 3 * square 3 / square 3 = square roof of 3 / 3

b) sin. theta = 5/5 square root of 2= 1/square root of 2 * square root of 2/square root of 2 = square root of 2/ 2.
cos. theta = square root of 2/ 2.
tan. theta = 5/5 = 1

Well that was all we did for the first class, now second class which was after lunch.



black : 2Pi (1,0)
Pi/2 (0,1)
Pi (-1,0)
3Pi/2 (0,-1)
blue : Pi (square root of 3/2 , 1/2)
5Pi/6 (-square root of 3/2 , 1/2)
7Pi/6 (-square root of 3/2 , -1/2)
11Pi/6 (square root of 3/2 , -1/2)
red : Pi/4 (square root of 2/2, square root of 2/2)
3Pi/4 (-square root of 2/2, square root of 2/2)
5Pi/4 (-square root of 2/2, -square root of 2/2)
7Pi/4 (square root of 2/2, -square root of 2/2)
green : Pi/3 (1/2, square root of 3/2)
2Pi/3 (-1/2, square root of 3/2)
4Pi/3 (-1/2, -square root of 3/2)
5Pi/3 (1/2, -square root of 3/2)

tan.

black : all undefined
blue : 1/square root of 3
-1/square root of 3
1/square root of 3
-1/square root of 3 (respectively)
red : 1
-1
1
-1 (respectively)
green : square root of 3
-square root of 3
square root of 3
-square root of 3

Biggest size of cos. You can get is 1 and smallest size is -1. Biggest size of sin. you can get is 1 and smallest size is -1.

anyways that was all for the scribe and let me tell you guys something, it was really hard to explain this and it took me hours to do this and I know its not the way you guys expected but this is the only way I could do. So if u guys have anything to say to this please leave me a comment and I will try to fix it. So the scribe for tomorrow will be MANNY.
GOOD LUCK AND U ALL HAVE FUN.



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2 Comments:

At 2/08/2006 10:08 PM, Blogger Mr. Kuropatwa said...

WOW Abdi!

You put a LOT of work into this scribe post; it shows in every line. I love the amount of detail you've included - particularly the questions we worked through WITH answers and how you used color in a meaningful way! I also really like the pictures, they go a long way to help understand what you're writing about.

Way to go! You've really set a new standard for the scribes who follow you. Bravo!

 
At 2/09/2006 12:01 AM, Blogger Richy said...

Oh look. PC30S Style. Hahaha. Excellent Work Abdi.

 

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