Question #f36f5

1 Answer
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)))