Respuesta :
Answer:
y=cos x
Step-by-step explanation:
A sinusoid is a mathematical curve that describes a smooth periodic oscillation. Periodic means that the values and the shape of the function are repeated regularly. Sinusoid is named after the function sine. The cosine function is just the sine function translated 90° to the left, so it's a sinusoid.
The graph that is a sinusoid is; Option D: y = cos x
What is a sinusoid function?
A sinusoid means the graph is shaped like the sin function graph. Now, the pattern of a graph of the sin function, shows that it goes up and down smoothly as x increases.
Now, the cos function is basically the same graph as the sine function with the exception that it is shifted horizontally i.e. translated to the left by 90°.
Looking at the options, only Option D represents a sinusoid.
Read more about Sinusoid function at; https://brainly.com/question/27767092
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