Word Count : 276

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The cosine function is given by [ y=\cos x,\qquad x\in[0,2\pi]. ] To obtain its graph, we first consider the important values of (x) between (0) and (2\pi). The standard values of the cosine function are: [ \begin{array}{c|ccccc} x&0&\frac{\pi}{2}&\pi&\frac{3\pi}{2}&2\pi\ \hline \cos x&1&0&-1&0&1 \end{array} ] Thus, the corresponding _______ ____ _________ _________ _____ _______ ___ _________ _____ ___ ___ ___.
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