Question
Without a calculator or computer, match the formula with the graphs in Figure 1.61(a) $y=2 \cos (t-\pi / 2)$(b) $y=2 \cos t$(c) $y=2 \cos (t+\pi / 2)$(FIGURE CAN'T COPY)
Step 1
This is a simple cosine function with an amplitude of 2. The cosine function starts at its maximum value, so we are looking for a graph that starts at 2 and does not pass through the origin. This corresponds to the graph labeled F(t). Show more…
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