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Mathematics 10 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

Which statement regarding the function y = cos(x) is true? A. cos(x) = -cos(x) B. Since the cosine function is even, reflection over the x axis does not change the graph. C. The cosine function is odd, so it is symmetrical across the origin. D. cos(x) = cos(-x)

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