cos(-x) = cos(x)
This identity states that the cosine of the negative angle is equal to the cosine of the positive angle
To find the value of cos(-x), we can use the identity for the cosine function:
cos(-x) = cos(x)
This identity states that the cosine of the negative angle is equal to the cosine of the positive angle.
Therefore, cos(-x) is equal to the cosine of x.
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