gr1
				y=cos(x/k+fi_0)
radiany	xi [stopnie]	yi		y'	(yi-y'i)^2
0.174532925199433	10	0.2749993		0.274992948375554	4.03431331059783E-11
1.5707963267949	90	0.9979848		0.997984597036553	4.11941608831055E-14
3.66519142918809	210	-0.2072624		-0.207262997260598	3.56720221931041E-13
4.71238898038469	270	-0.9045443		-0.904545420209534	1.25486939986587E-12
2.44346095279206	140	0.7619683		0.761969559614215	1.58662796962062E-12
4.01425727958696	230	-0.4933647		-0.493365785907598	1.17919531068929E-12
				s=	4.47617401692924E-11
	fi_0	-1.44580329164221
	k	1.13636098271902
x	radiany	y
0	0	0.124667822876947
10	0.174532925199433	0.274992948375554
20	0.349065850398866	0.418843819509879
30	0.523598775598299	0.552833705326461
40	0.698131700797732	0.673808035469433
50	0.872664625997165	0.778918669324571
60	1.0471975511966	0.865690950781638
70	1.22173047639603	0.932081969921523
80	1.39626340159546	0.976528659953043
90	1.5707963267949	0.997984597036553
100	1.74532925199433	0.995944636603353
110	1.91986217719376	0.970456806149477
120	2.0943951023932	0.922121174507696
130	2.26892802759263	0.852075724218857
140	2.44346095279206	0.761969559614215
150	2.61799387799149	0.653924081380172
160	2.79252680319093	0.530483041686123
170	2.96705972839036	0.394552655744825
180	3.14159265358979	0.249333179779639
190	3.31612557878923	0.098243566282257
200	3.49065850398866	-0.055159029571665
210	3.66519142918809	-0.207262997260598
220	3.83972435438752	-0.354487300316327
230	4.01425727958696	-0.493365785907598
240	4.18879020478639	-0.62062878967845
250	4.36332312998582	-0.733280114590225
260	4.53785605518526	-0.828667571427667
270	4.71238898038469	-0.904545420209534
280	4.88692190558412	-0.959127242423894
290	5.06145483078356	-0.991127999298775
300	5.23598775598299	-0.99979428591568
310	5.41052068118242	-0.984922068882909
320	5.58505360638185	-0.946861489964456
330	5.75958653158129	-0.886508622571025
340	5.93411945678072	-0.805284375192911
350	6.10865238198015	-0.705101038458585
360	6.28318530717959	-0.588317263413144