kanerobertrosss1605 kanerobertrosss1605

07-04-2018
Mathematics

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What is the point of intersection of the terminal side of -120 with the unit circle?

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sqdancefan sqdancefan

07-04-2018

The coordinates of that point (P) are shown on the graph to be (-.5, -.87).
Their exact value is (-1/2, -(√3)/2).
They are (cos(120°), sin(120°)).

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