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
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