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Section 4.5
Ron Larson said the following:
". . . the sine curve is symmetric with respect to
the origin, whereas the cosine curve is symmetric with respect to the y-axis. These properties of symmetry follow from the fact that the sine function is odd and the cosine function is even."
I don't understand why the sine function is odd based on the fact that it is symmetric with respect to the origin.
I don't understand why the cosine function is even based on the fact that it is symmetric with respect to the y-axis aka the x = 0 line.
Explain.
Ron Larson said the following:
". . . the sine curve is symmetric with respect to
the origin, whereas the cosine curve is symmetric with respect to the y-axis. These properties of symmetry follow from the fact that the sine function is odd and the cosine function is even."
I don't understand why the sine function is odd based on the fact that it is symmetric with respect to the origin.
I don't understand why the cosine function is even based on the fact that it is symmetric with respect to the y-axis aka the x = 0 line.
Explain.