1. Consider the case of rectangular coordinate systems with orthonormal bases only. 2. Resolvers can perform very accurate analog conversion from polar to rectangular coordinates . 3. The mapping that transforms from spherical coordinates to rectangular coordinates is 4. Note this is valid only for one dimensional fluid flow in rectangular coordinates . 5. Some scientific calculators provide a function to convert from rectangular coordinates to polar coordinates. 6. Conversions include polar-rectangular coordinates ( P?! ?! R ), angles. 7. For example, it is very easy to convert these between polar and rectangular coordinates . 8. An example of this was multiple conversions from polar to rectangular coordinates just to solve one problem. 9. Wedges have the disadvantage of both translating and bending the beam direction paths will no longer lie on convenient rectangular coordinates . 10. The ultimate relation is the method of choice to compute the inverse of a complex number if it is given in rectangular coordinates .