Question #f36f5

1 Answer
Altrigeos
May 19, 2017

#r=sqrt(2/(cos(theta)sin(theta)))#

Explanation:

We know that:
#x=r cos(theta)#
#y=r sin(theta)#

Substituting:
#2xy=4#
#2(rcos(theta))(rsin(theta))=4#
#r^2=2/(cos(theta)sin(theta))#
#r=sqrt(2/(cos(theta)sin(theta)))#

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