A Point in Rectangular Coordinates Is Given $$( - 7,7 )$$

A point in rectangular coordinates is given.Convert the point to polar coordinates,r > 0.​ $$( - 7,7 )$$ ​

A) Polar coordinates: $\left( - \sqrt { 7 } , \frac { \pi } { 4 } \right)$
B) Polar coordinates: $\left( \sqrt { 98 } , \frac { 3 \pi } { 4 } \right)$
C) Polar coordinates: $\left( \sqrt { 98 } , - \frac { 3 \pi } { 4 } \right)$
D) Polar coordinates: $\left( - \sqrt { 98 } , \frac { 3 \pi } { 4 } \right)$
E) Polar coordinates: $\left( \sqrt { 7 } , \frac { \pi } { 4 } \right)$

Correct Answer:

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