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Mathematics 9 Online
OpenStudy (anonymous):

What is the domain of y = cos θ? A. [-1, 1] B. [0, infinity] C. All real numbers D. 2pi

OpenStudy (zale101):

|dw:1433388023446:dw| This is the graph of cosine. I apologize if the drawing didn't seem right. based off of your observations, what can you conclude about the domain?

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