1.

As theta increases from (pi)/(4) to (5pi)/(4), the value of 4"cos"(1)/(2)theta

Answer»

increases, and then decreases
decreases, and then increases
decreases throughout
increasesthroughout

Solution :Graph `4cos((1)/(2)x)` using ZOOM/ZTRIG and observe that the portion of the graph between `(pi)/(4) and (5PI)/(4)` is decreasing.


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