cos

<?

$num = deg2rad(360);

$return = cos($num);

echo $return;

1

<?

for($i = 0; $i <= 360; ++$i)
{
    $num = deg2rad($i);

    $return = cos($num);

    echo "$i: $return" . PHP_EOL;
}

0: 1
1: 0.99984769515639
2: 0.9993908270191
3: 0.99862953475457
4: 0.99756405025982
5: 0.99619469809175
6: 0.99452189536827
7: 0.99254615164132
8: 0.99026806874157
9: 0.98768834059514
10: 0.98480775301221
11: 0.98162718344766
12: 0.97814760073381
13: 0.97437006478524
14: 0.970295726276
15: 0.96592582628907
16: 0.96126169593832
17: 0.95630475596304
18: 0.95105651629515
19: 0.94551857559932
20: 0.93969262078591
21: 0.9335804264972
22: 0.92718385456679
23: 0.92050485345244
24: 0.9135454576426
25: 0.90630778703665
26: 0.89879404629917
27: 0.89100652418837
28: 0.88294759285893
29: 0.8746197071394
30: 0.86602540378444
31: 0.85716730070211
32: 0.84804809615643
33: 0.83867056794542
34: 0.82903757255504
35: 0.81915204428899
36: 0.80901699437495
37: 0.79863551004729
38: 0.78801075360672
39: 0.77714596145697
40: 0.76604444311898
41: 0.75470958022277
42: 0.74314482547739
43: 0.73135370161917
44: 0.71933980033865
45: 0.70710678118655
46: 0.694658370459
47: 0.6819983600625
48: 0.66913060635886
49: 0.65605902899051
50: 0.64278760968654
51: 0.62932039104984
52: 0.61566147532566
53: 0.60181502315205
54: 0.58778525229247
55: 0.57357643635105
56: 0.55919290347075
57: 0.54463903501503
58: 0.5299192642332
59: 0.51503807491005
60: 0.5
61: 0.48480962024634
62: 0.46947156278589
63: 0.45399049973955
64: 0.43837114678908
65: 0.4226182617407
66: 0.4067366430758
67: 0.39073112848927
68: 0.37460659341591
69: 0.3583679495453
70: 0.34202014332567
71: 0.32556815445716
72: 0.30901699437495
73: 0.29237170472274
74: 0.275637355817
75: 0.25881904510252
76: 0.24192189559967
77: 0.22495105434387
78: 0.20791169081776
79: 0.19080899537654
80: 0.17364817766693
81: 0.15643446504023
82: 0.13917310096007
83: 0.12186934340515
84: 0.10452846326765
85: 0.087155742747658
86: 0.069756473744125
87: 0.052335956242944
88: 0.034899496702501
89: 0.017452406437284
90: 6.1232339957368E-17
91: -0.017452406437283
92: -0.034899496702501
93: -0.052335956242944
94: -0.069756473744125
95: -0.087155742747658
96: -0.10452846326765
97: -0.12186934340515
98: -0.13917310096007
99: -0.15643446504023
100: -0.17364817766693
101: -0.19080899537654
102: -0.20791169081776
103: -0.22495105434386
104: -0.24192189559967
105: -0.25881904510252
106: -0.275637355817
107: -0.29237170472274
108: -0.30901699437495
109: -0.32556815445716
110: -0.34202014332567
111: -0.3583679495453
112: -0.37460659341591
113: -0.39073112848927
114: -0.4067366430758
115: -0.4226182617407
116: -0.43837114678908
117: -0.45399049973955
118: -0.46947156278589
119: -0.48480962024634
120: -0.5
121: -0.51503807491005
122: -0.5299192642332
123: -0.54463903501503
124: -0.55919290347075
125: -0.57357643635105
126: -0.58778525229247
127: -0.60181502315205
128: -0.61566147532566
129: -0.62932039104984
130: -0.64278760968654
131: -0.65605902899051
132: -0.66913060635886
133: -0.6819983600625
134: -0.694658370459
135: -0.70710678118655
136: -0.71933980033865
137: -0.73135370161917
138: -0.74314482547739
139: -0.75470958022277
140: -0.76604444311898
141: -0.77714596145697
142: -0.78801075360672
143: -0.79863551004729
144: -0.80901699437495
145: -0.81915204428899
146: -0.82903757255504
147: -0.83867056794542
148: -0.84804809615643
149: -0.85716730070211
150: -0.86602540378444
151: -0.8746197071394
152: -0.88294759285893
153: -0.89100652418837
154: -0.89879404629917
155: -0.90630778703665
156: -0.9135454576426
157: -0.92050485345244
158: -0.92718385456679
159: -0.9335804264972
160: -0.93969262078591
161: -0.94551857559932
162: -0.95105651629515
163: -0.95630475596304
164: -0.96126169593832
165: -0.96592582628907
166: -0.970295726276
167: -0.97437006478524
168: -0.97814760073381
169: -0.98162718344766
170: -0.98480775301221
171: -0.98768834059514
172: -0.99026806874157
173: -0.99254615164132
174: -0.99452189536827
175: -0.99619469809175
176: -0.99756405025982
177: -0.99862953475457
178: -0.9993908270191
179: -0.99984769515639
180: -1
181: -0.99984769515639
182: -0.9993908270191
183: -0.99862953475457
184: -0.99756405025982
185: -0.99619469809175
186: -0.99452189536827
187: -0.99254615164132
188: -0.99026806874157
189: -0.98768834059514
190: -0.98480775301221
191: -0.98162718344766
192: -0.97814760073381
193: -0.97437006478524
194: -0.970295726276
195: -0.96592582628907
196: -0.96126169593832
197: -0.95630475596304
198: -0.95105651629515
199: -0.94551857559932
200: -0.93969262078591
201: -0.9335804264972
202: -0.92718385456679
203: -0.92050485345244
204: -0.9135454576426
205: -0.90630778703665
206: -0.89879404629917
207: -0.89100652418837
208: -0.88294759285893
209: -0.8746197071394
210: -0.86602540378444
211: -0.85716730070211
212: -0.84804809615643
213: -0.83867056794542
214: -0.82903757255504
215: -0.81915204428899
216: -0.80901699437495
217: -0.79863551004729
218: -0.78801075360672
219: -0.77714596145697
220: -0.76604444311898
221: -0.75470958022277
222: -0.74314482547739
223: -0.73135370161917
224: -0.71933980033865
225: -0.70710678118655
226: -0.694658370459
227: -0.6819983600625
228: -0.66913060635886
229: -0.65605902899051
230: -0.64278760968654
231: -0.62932039104984
232: -0.61566147532566
233: -0.60181502315205
234: -0.58778525229247
235: -0.57357643635105
236: -0.55919290347075
237: -0.54463903501503
238: -0.52991926423321
239: -0.51503807491005
240: -0.5
241: -0.48480962024634
242: -0.46947156278589
243: -0.45399049973955
244: -0.43837114678908
245: -0.4226182617407
246: -0.4067366430758
247: -0.39073112848927
248: -0.37460659341591
249: -0.3583679495453
250: -0.34202014332567
251: -0.32556815445716
252: -0.30901699437495
253: -0.29237170472274
254: -0.275637355817
255: -0.25881904510252
256: -0.24192189559967
257: -0.22495105434387
258: -0.20791169081776
259: -0.19080899537654
260: -0.17364817766693
261: -0.15643446504023
262: -0.13917310096007
263: -0.12186934340515
264: -0.10452846326765
265: -0.087155742747658
266: -0.069756473744126
267: -0.052335956242943
268: -0.034899496702501
269: -0.017452406437283
270: -1.836970198721E-16
271: 0.017452406437283
272: 0.0348994967025
273: 0.052335956242943
274: 0.069756473744125
275: 0.087155742747658
276: 0.10452846326765
277: 0.12186934340515
278: 0.13917310096007
279: 0.15643446504023
280: 0.17364817766693
281: 0.19080899537654
282: 0.20791169081776
283: 0.22495105434386
284: 0.24192189559967
285: 0.25881904510252
286: 0.275637355817
287: 0.29237170472274
288: 0.30901699437495
289: 0.32556815445716
290: 0.34202014332567
291: 0.3583679495453
292: 0.37460659341591
293: 0.39073112848927
294: 0.4067366430758
295: 0.4226182617407
296: 0.43837114678908
297: 0.45399049973955
298: 0.46947156278589
299: 0.48480962024634
300: 0.5
301: 0.51503807491005
302: 0.5299192642332
303: 0.54463903501503
304: 0.55919290347075
305: 0.57357643635105
306: 0.58778525229247
307: 0.60181502315205
308: 0.61566147532566
309: 0.62932039104984
310: 0.64278760968654
311: 0.65605902899051
312: 0.66913060635886
313: 0.6819983600625
314: 0.694658370459
315: 0.70710678118655
316: 0.71933980033865
317: 0.73135370161917
318: 0.74314482547739
319: 0.75470958022277
320: 0.76604444311898
321: 0.77714596145697
322: 0.78801075360672
323: 0.79863551004729
324: 0.80901699437495
325: 0.81915204428899
326: 0.82903757255504
327: 0.83867056794542
328: 0.84804809615643
329: 0.85716730070211
330: 0.86602540378444
331: 0.8746197071394
332: 0.88294759285893
333: 0.89100652418837
334: 0.89879404629917
335: 0.90630778703665
336: 0.9135454576426
337: 0.92050485345244
338: 0.92718385456679
339: 0.9335804264972
340: 0.93969262078591
341: 0.94551857559932
342: 0.95105651629515
343: 0.95630475596304
344: 0.96126169593832
345: 0.96592582628907
346: 0.970295726276
347: 0.97437006478524
348: 0.97814760073381
349: 0.98162718344766
350: 0.98480775301221
351: 0.98768834059514
352: 0.99026806874157
353: 0.99254615164132
354: 0.99452189536827
355: 0.99619469809175
356: 0.99756405025982
357: 0.99862953475457
358: 0.9993908270191
359: 0.99984769515639
360: 1