Rectangular to Polar Conversion

The rectangular to polar conversion keys convert an x and y rectangular value to the radius (r) and angle (Θ).

Calculates the (r, Θ) given the (x, y) values in the x and y register. The value of Θ will depend on the degree / radian mode.

Calculates the (x, y) values given the (r, Θ) values in the x = r and y = Θ register. The value of Θ will depend on the degree / radian mode.

 

Example Rectangular to Polar Example:

Value	Keystrokes	Display	Description
3	=/ENTER	3.00	Enters the Y value
4	→P	5.00	Displays the polar r value
	SWAP	36.9	Displays the polar Θ value

Polar to Rectangular Example:

Value	Keystrokes	Display	Description
42	=/ENTER	42.0	Enters the polar Θ value.
1	SHIFT, →R	0.743	Displays the x value.
	SWAP	0.669	Displays the y value.

 

Rectangular to Polar conversion is a good example of the advantages of using a stack. The values from both the x and y register are used to produce two different results with a single key. To do these conversion without a stack would require evaluating two expressions.