Teacher check list
A
Cosine - multiple solutions
C
1
cos x = 0.643
x = 50°
x = 310°
2
cos x = -0.342
x = 110°
x = 250°
3
cos x = -0.5
x = 120°
x = 240°
4
cos x = 0.342
x = 70°
x = 290°
5
cos x = 0.866
x = 30°
x = 330°
6
cos x = -0.643
x = 130°
x = 230°
7
cos x = 0.5
x = 60°
x = 300°
8
cos x = -0.966
x = 165°
x = 195°
9
cos x = -0.766
x = 140°
x = 220°
10
cos x = -0.259
x = 105°
x = 255°
11
cos x = 0.94
x = 20°
x = 340°
12
cos x = 0.766
x = 40°
x = 320°
13
cos x = 0.174
x = 80°
x = 280°
14
cos x = -0.866
x = 150°
x = 210°
15
cos x = -0.94
x = 160°
x = 200°
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