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>> No.11660391 [View]
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11660391

>>11660365
The x-coordinate corresponds to the cosine, so that allows us to eliminate b. Next, if it was a, then the leftmost point would be where the x-axis ends, as then the x-coordinate would be -5. Not happening, thus not a. If it was d, then the rightmost point would have its x-coordinate be 2-2cos(0)=2-2=0, but that is not happening either. Only c is possible.

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