Question

What is the Cartesian equation for `rsin(theta + Pi/2) = 2`?

Answer 1

`x=2`

Explanation:

The relation between polar coordinates `(r,theta)` and Cartesan coordinates `(x,y)` is given by

`x=rcostheta`, `y=rsintheta`

Hence as `sin(theta+pi/2)=costheta`,

`rsin(theta+Pi/2)=2` can be written as

`rcostheta=2` or `x=2`