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MathematicsMathematics
27 July, 03:51

Is cos theta=cos (-theta)

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  1. 27 July, 07:15
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    TRUE

    Step-by-step explanation:

    An even function is a function that satisfies that f (x) = f (-x). Also, we know that cosine is an even function, therefore cos (theta) equals cos (-theta).
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