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31 March, 16:49

There are values of t so that the equation cos t = 5/4 holds.

A. True

B. False

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Answers (2)
  1. 31 March, 17:24
    0
    B. False

    cosine function is bounded from - 1 to + 1 and 5/4 > 1, the none value of t satisties that equation ...
  2. 31 March, 20:12
    0
    The range of cos t is - 1 ≤ cos t ≤ 1.

    Therefore, there is no value of t so that the equation cos t = 5/4 holds.

    i. e. False.
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