Question

What is the Cartesian form of `(18,(-11pi)/8))`?

Answer 1

(-6.888 , 16.63 )

Explanation:

Using the formulae that links Polar to Cartesian coordinates.

`• x = rcostheta`

`• y = rsintheta`

here r = 18 and `theta = (-11pi)/8`

`x = 18cos((-11pi)/8) ≈ -6.888`

`y = 18sin((-11pi)/8) ≈ 16.63`