| cyl = √(x2 + y2) | ||
| angle = ½ × [tan−1 (y/x)] | ||
| if x > 0 and y > 0 | → | axis = angle |
| if x < 0 | → | axis = angle + 90° |
| if x > 0 and y < 0 | → | axis = angle + 180° |
| if x = 0 and y < 0 | → | axis = 135° |
| if x = 0 and y > 0 | → | axis = 45° |
| if x = 0 and y = 0 | → | axis = 0° |
| if y = 0 and x < 0 | → | axis = 90° |
| if y = 0 and x > 0 | → | axis = 0°. |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.