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Geometry 7 Online
OpenStudy (anonymous):

What is the algebraic rule for a figure that is rotated 270° clockwise about the origin

OpenStudy (amistre64):

if memory serves, X = xcos(t) + ysin(t) Y = xsin(t) - ycos(t)

OpenStudy (amistre64):

given a point (x,y) to be rotated by t radians

OpenStudy (amistre64):

might have the +- reversed from top to bottom tho ...

OpenStudy (anonymous):

k thanks

OpenStudy (amistre64):

good luck

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