How do you find the rectangular coordinates of the point with polar coordinates $(2,pi/4)$ ?

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Answer 1 · 2014-09-09T18:55:42

Since $(x,y)=(rcos theta,rsin theta)$ ,
$(x,y)=(2cos(pi/4),2sin(pi/4))=(sqrt{2}.sqrt{2})$

How do you find the rectangular coordinates of the point with polar coordinates (2,pi/4)(2,pi/4)?