Mamy

${10}^{\circ }\to \frac{{10}^{\circ }}{{180}^{\circ }}\pi =\frac{\pi }{18}\approx 0,17$  

${20}^{\circ }\to \frac{{20}^{\circ }}{{180}^{\circ }}\pi =\frac{\pi }{9}\approx 0,35$  

${30}^{\circ }\to \frac{{30}^{\circ }}{{180}^{\circ }}\pi =\frac{\pi }{6}\approx 0,52$  

${45}^{\circ }\to \frac{{45}^{\circ }}{{180}^{\circ }}\pi =\frac{\pi }{4}\approx 0,79$  

${60}^{\circ }\to \frac{{60}^{\circ }}{{180}^{\circ }}\pi =\frac{\pi }{3}\approx 1,05$  

${90}^{\circ }\to \frac{{90}^{\circ }}{{180}^{\circ }}\pi =\frac{\pi }{2}\approx 1,57$  

${120}^{\circ }\to \frac{{120}^{\circ }}{{180}^{\circ }}\pi =\frac{2\pi }{3}\approx 2,09$  

${135}^{\circ }\to \frac{{135}^{\circ }}{{180}^{\circ }}\pi =\frac{3\pi }{4}\approx 2,36$  

${150}^{\circ }\to \frac{{150}^{\circ }}{{180}^{\circ }}\pi =\frac{5\pi }{6}\approx 2,62$  

${180}^{\circ }\to \frac{{180}^{\circ }}{{180}^{\circ }}\pi =\pi \approx 3,14$  

${270}^{\circ }\to \frac{{2700}^{\circ }}{{180}^{\circ }}\pi =\frac{3\pi }{2}\approx 4,71$  

Tabelka

stopnie	10	20	30	45	60	90	120	135	150	180	270
radiany	0,17	0,35	0,52	0,79	1,05	1,57	2,09	2,36	2,62	3,14	3,71