수학 | 삼각비

1. 특수각의 삼각비

	30˚	45˚	60˚
sin A	1/2 (√1/2)	√2/2	√3/2
cos A	√3/2	√2/2	1/2 (√1/2)
tan A	√3/3 (1/√3)	1 (√2/√2)	√3 (√3/1)

2. 삼각비의 표 

각 도	사인(sin)	코사인(cos)	탄젠트(tan)
0˚	0.0000	1.0000	0.0000
1˚	0.0175	0.9998	0.0175
2˚	0.0349	0.9994	0.0349
3˚	0.0523	0.9986	0.0524
4˚	0.0698	0.9976	0.0699
5˚	0.0872	0.9962	0.0875
6˚	0.1045	0.9945	0.1051
7˚	0.1219	0.9925	0.1228
8˚	0.1392	0.9903	0.1405
9˚	0.1564	0.9877	0.1584
10˚	0.1736	0.9848	0.1763
11˚	0.1908	0.9816	0.1944
12˚	0.2079	0.9781	0.2126
13˚	0.2250	0.9744	0.2309
14˚	0.2419	0.9703	0.2493
15˚	0.2588	0.9659	0.2679
16˚	0.2756	0.9613	0.2867
17˚	0.2924	0.9563	0.3057
18˚	0.3090	0.9511	0.3249
19˚	0.3256	0.9455	0.3443
20˚	0.3420	0.9397	0.3640
21˚	0.3584	0.9336	0.3839
22˚	0.3746	0.9272	0.4040
23˚	0.3907	0.9205	0.4245
24˚	0.4067	0.9135	0.4452
25˚	0.4226	0.9063	0.4663
26˚	0.4384	0.8988	0.4877
27˚	0.4540	0.8910	0.5095
28˚	0.4695	0.8829	0.5317
29˚	0.4848	0.8746	0.5543
30˚	0.5000	0.8660	0.5774
31˚	0.5150	0.8752	0.6009
32˚	0.5299	0.8480	0.6249
33˚	0.5446	0.8387	0.6494
34˚	0.5592	0.8290	0.6745
35˚	0.5736	0.8192	0.7002
36˚	0.5878	0.8090	0.7265
37˚	0.6018	0.7986	0.7536
38˚	0.6157	0.7880	0.7813
39˚	0.6293	0.7771	0.8098
40˚	0.6428	0.7660	0.8391
41˚	0.6561	0.7547	0.8693
42˚	0.6691	0.7431	0.9004
43˚	0.6820	0.7314	0.9325
44˚	0.6947	0.7193	0.9657
45˚	0.7071	0.7071	1.0000
46˚	0.7193	0.6947	1.0355
46˚	0.7314	0.6820	1.0724
48˚	0.7431	0.6691	1.1106
49˚	0.7547	0.6561	1.1504
50˚	0.7660	0.6428	1.1918
51˚	0.7771	0.6293	1.2349
52˚	0.7880	0.6157	1.2799
53˚	0.7986	0.6018	1.3270
54˚	0.8090	0.5878	1.3764
55˚	0.8192	0.5736	1.4281
56˚	0.8290	0.5592	1.4826
57˚	0.8387	0.5446	1.5399
58˚	0.8480	0.5299	1.6003
59˚	0.8572	0.5150	1.6643
60˚	0.8660	0.5000	1.7321
61˚	0.8746	0.4848	1.8040
62˚	0.8829	0.4695	1.8807
63˚	0.8910	0.4540	1.9626
64˚	0.8988	0.4384	2.0503
65˚	0.9063	0.4226	2.1445
66˚	0.9135	0.4067	2.2460
67˚	0.9205	0.3907	2.3559
68˚	0.9272	0.3746	2.4751
69˚	0.9336	0.3584	2.6051
70˚	0.9397	0.3420	2.7475
71˚	0.9455	0.3256	2.9042
72˚	0.9511	0.3090	3.0777
73˚	0.9563	0.2924	3.2709
74˚	0.9613	0.2756	3.4874
75˚	0.9659	0.2588	3.7321
76˚	0.9703	0.2419	4.0108
77˚	0.9744	0.2250	4.3315
78˚	0.9781	0.2079	4.7046
79˚	0.9816	0.1908	5.1446
80˚	0.9848	0.1736	5.6713
81˚	0.9877	0.1564	6.3138
82˚	0.9903	0.1392	7.1154
83˚	0.9925	0.1219	8.1443
84˚	0.9945	0.1045	9.5144
85˚	0.9962	0.0872	11.4301
86˚	0.9976	0.0698	14.3007
87˚	0.9986	0.0523	19.0811
88˚	0.9994	0.0349	28.6363
89˚	0.9998	0.0175	57.2900
90˚	1.0000	0.0000