Question

What is the Cartesian form of `( 7 , (25pi)/12 )`?

Answer 1

`(6.761,1,812)`

Explanation:

Polar form `(r,theta)` may be converted to rectangular Cartesian form `(x,y)` via the transormations :

`x=rcostheta and y=rsintheta`.

So in this particular case we get

`x=7cos((25pi)/12)=6.761`

`y=7sin((25pi)/12)=1.812`

Hence the Cartesian form is `(6.761,1,812)`.