1. Flashback
Quadrilateral ABCD is drawn on the standard (x,y) coordinate plane as shown below, with points E and F on AD. Point G is the center of rectangle BCEF. How many coordinate units long is AG? A.
 B.
 C.
 D. 
E.  11

2. Joke of the day
 You hear a news report on TV, and it says…At John F. Kennedy International Airport today, a Caucasian male (later discovered to be a high school mathematics teacher) was arrested trying to board a flight while in possession of a compass, a protractor and a graphical calculator.

3. According to law enforcement officials, he is believed to have ties to the Al-Gebra network. He will be charged with carrying weapons of math instruction.

4. Do trig functions have inverses?
Only if we restrict the domains

5. Using inverses to find angles
Cos -1 (-0.5)
Sin x = 0.7 in 0 < x < 2∏

6. Practical application
Enter data on p. 49 into L1 and L2 on your calculator.
Calculate sinreg

7. homework
P. 53 #24, , 31,32,35
By Friday, p. 55 Quick Quiz Must show work to get any credit.

8. Exit Slip
True or false: The period of y = sin(x/2) is ∏. Justify your answer.