角度の換算

\(\normalsize Angle\ conversion\\ (1)\ 1degree=60arcmin=3600arcsec\\ (2)\ 1degree={\large\frac{\pi}{180}}rad={\large\frac{100}{90}}grad\\ (3)\ 1rad={\large\frac{180}{\pi}}deg,\ 1grad=0.9deg\\ (4)\ 1mil={\large\frac{180}{3200}}deg={\large\frac{1}{16}}grad\\ (5)\ slope(\%)=100tan(rad)\hspace{20px} unit:percent\\ \hspace{27px} slope(\%{\tiny 0})=10slope(\%) \hspace{20px} unit:permil\\ \hspace{27px} rad=atan({\large\frac{slope(\%)}{100}})=atan({\large\frac{slope(\%{\tiny 0})}{1000}})\\ \)