### 26.12.5 Rectangular coordinates of a point

The rectangular_coordinates command finds the rectangular coordinates of a point given its polar coordinates.

- rectangular_coordinates takes two arguments: r and θ, two real numbers.
- rectangular_coordinates(r,θ) returns a list of the rectangular coordinates of the point with polar coordinates r and θ.

#### Example

rectangular_coordinates(2,pi/4)

or:

rectangular_coordinates(polar_point(2,pi/4))

| ⎡ ⎢ ⎢ ⎣ |
2
2
|  | √ |
2
| , |
2
2
|  | √ |
2
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