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Section 6: Functions 93
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In the HP-41C, angle θ is represented in the following manner:
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To convert from rectangular x, y coordinates to polar (r, θ) coordinates
(magnitude and angle, respectively):
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1.
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Key in the the y-coordinate.
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2.
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Press ENTER .
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3.
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Key in the the x-coordinate.
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4.
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Execute R–P (rectangular to polar).
Magnitude r is placed in the X-register and angle θ is placed in
the Y-register. To display the θ value, press
X Y .
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When you execute the R–P function, the stack
contents are changed...
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...from this...
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...to this.
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R–P
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