Question

Question #7b744

Answer 1

`r=sqrt(5/cos(2theta))`

Explanation:

`x=rcostheta`
`y=rsintheta`

`2(rcostheta)(rsintheta)=5`

`2r^2costhetasintheta=5`

`r^2sin(2theta)=5`

`r=sqrt(5/cos(2theta))`