Graphs of Trig Functions

I overall like this unit because it reminded me of easier units in Algebra II. I could view it as graphing any other function, except this was trigonometry. I did not find it to be exceptionally difficult and only made dumb mistakes on the test.

2.b. range: all values of x where x is a real number, except pi/2 +/- kpi where k is an integer
       domain: all values of y where y is a real number

1. I got most of this right except what A means. A is the amplitude of the graph, which is the total vertical distance it spans divided by two, otherwise known as the size of the cosine waves

Trig Triangles

Overall, I thought this unit was pretty easy to do. It all made sense to me, with the exception of one type of problem where there were two triangles. I enjoy the trig units because the basic rules all apply.

3c. I solved for one triangle already, here is the other.
   180-88.1= 91.9 degree angle A
   sin33/14=sin91.9/a side a=25.69
   180- 91.9- 33= angle B= 55.1 degrees

Trigonometry and Unit Circles Test Corrections

I found the concepts in this unit to be relatively easy, with the exception of the one displayed in problem 4. I struggled, however, when it came to memorizing the unit circle. I knew the positives and negatives, but not the exact numbers, which hurt me on question 9.

4.
tan50.57= y/x
x= y/tan50.57
tan70.42=(y+3500)/x
x=(y+3500)/tan70.42
y/tan50.57= (y+3500)/tan70.42
y(tan70.42)= (y+3500)(tan50.57)
y(tan70.42)= y(tan50.57) +4256.42
2.81y= 1.22y +4256.42
1.59y= 4256.42
y=2676.99
+3500
6176.99 feet

8.
secx= -5/3
cos x= -3/5
hypotenuse: 5
adjacent: -3
opposite: -4
sin= -45
tan: 4/3

Angles and Velocity Test Corrections

Overall, I thought this test was very easy. The mistakes I made were based on misreading what the problem was asking or only answering half the question. I understand all the concepts. The problems I got wrong were simple to answer. Here they are:
5b. π/3
7b. π/3
10a. 78 degrees