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2 cards from this section. Quick, good the night before a test.
What is the amplitude of the cosine function?
Consider the maximum height of the wave.
At what angle does cos(θ) = 0?
Think about where the graph crosses the x-axis.
What is the nature of the graph of y = cos(θ)?
Visualize the standard cosine function graph.
Is the period of the cosine function 180°? (True/False)
Think about how often the pattern repeats.
Using the properties of the cosine graph, derive the value of cos(150°).
Use the reference angle to find cos(150°).
Graph the transformations of y = cos(θ) if it's shifted left by 90° and stretched by a factor of 2.
Start with basic points and apply changes accordingly.
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