Question

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

A. True
B. False

Answer 1

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.

Answer 2

B. False

cosine function is bounded from -1 to +1 and 5/4 > 1, the none value of t satisties that equation..