QuestionQuestion 3 (1 point) The graph of $y=\cos x$ has a period of a) $\pi$ b) $2 \pi$ c) 1 d) $k$

Studdy Solution
Compare the standard period of the cosine function with the given options:
a) $\pi$ b) $2\pi$ c) 1 d) $k$
The correct period for $y = \cos x$ is $2\pi$, which matches option b).
The period of the graph of $y = \cos x$ is $\boxed{2\pi}$.