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Another representation, in polar coordinates, of the point (157) is -18 6 117 6

User RobCob
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Recall that in polar coordinates:


(r,\theta)=(-r,\theta+\pi)\text{.}

1) Notice that:


(11\pi)/(6)=(5\pi+6\pi)/(6)=(5\pi)/(6)+\pi

2) Using the first equation we get:


(1,(5\pi)/(6))=(-1,(5\pi)/(6)+\pi)=(-1,(11\pi)/(6))\text{.}

Answer: -1.

User Bbayles
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