Module 6 Students will identify angles of rotation, reference angles, and the trig ratios for a terminal ray through a
given point. Students will evaluate the 6 trig ratios at angles of rotation given in degrees and radians.
1. Draw a terminal ray through the point (-3,- 313) making an angle of rotation "o" in standard position.
Then give the following ratios: (for graphing use 313 25.2)
y-axis
4
I
sin -
COS =
tan =
2
X-axis
CSC =
sec =
cot =
6 -5 4 ) -2
-1
1
2
4 5 6
-2
Reference Angle =

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias