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10 April, 13:39

The expression cos^-1 (3/5) has an infinite number of values ... True or False.

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Answers (2)
  1. 10 April, 13:41
    0
    Cos^-1 (3/5) has only 1 solution

    between 0 and 180 degrees

    Cos^ (-1) is a function.

    cos^-1 (3/5) has infinitely many values

    Cos^ (-1) (3/5) + 2 pi n and - Cos^ (-1) (3/5) + 2 pi n

    n is any integer

    so right answer is True
  2. 10 April, 13:55
    0
    The answer is True but the first time I put that it said I was wrong?

    Apex
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