9. Unit Circle
Trigonometric Functions on the Unit Circle
Multiple Choice
Multiple ChoiceFind the sine, cosine, and tangent of each angle using the unit circle.
θ=225°,(−22,−22)
A
sinθ=−22,cosθ=−22,tanθ=2
B
sinθ=22,cosθ=−22,tanθ=−1
C
sinθ=−22,cosθ=−22,tanθ=1
D
sinθ=22,cosθ=22,tanθ=12
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