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8 March, 07:59

The domain of the cosine function is A. Pi B. 2pi C. All real numbers D. [-1,1]

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  1. 8 March, 10:10
    0
    the cosine is a cyclical function, so it cycles through from 0 all the way to the left and from 0 all the way to the right, nonstop, so its domain is (-∞, + ∞), namely all real numbers.
  2. 8 March, 11:26
    0
    Answer: all real numbers

    C.)

    Step-by-step explanation: APEX
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