radian | 1 rad | 2 rad | 3 rad | 4 rad | 5 rad | 6 rad | 7 rad | 8 rad | 9 rad | 10 rad | 11 rad | 12 rad | 13 rad | 14 rad | 15 rad | 16 rad | 17 rad | 18 rad | 19 rad | 20 rad | 21 rad | 22 rad | 23 rad | 24 rad | 25 rad | 26 rad | 27 rad | 28 rad | 29 rad | 30 rad | 31 rad | 32 rad | 33 rad | 34 rad | 35 rad | 36 rad | 37 rad | 38 rad | 39 rad | 40 rad | 41 rad | 42 rad | 43 rad | 44 rad | 45 rad | 46 rad | 47 rad | 48 rad | 49 rad | 50 rad | 51 rad | 52 rad | 53 rad | 54 rad | 55 rad | 56 rad | 57 rad | 58 rad | 59 rad | 60 rad | 61 rad | 62 rad | 63 rad | 64 rad | 65 rad | 66 rad | 67 rad | 68 rad | 69 rad | 70 rad | 71 rad | 72 rad | 73 rad | 74 rad | 75 rad | 76 rad | 77 rad | 78 rad | 79 rad | 80 rad | 81 rad | 82 rad | 83 rad | 84 rad | 85 rad | 86 rad | 87 rad | 88 rad | 89 rad | 90 rad | 91 rad | 92 rad | 93 rad | 94 rad | 95 rad | 96 rad | 97 rad | 98 rad | 99 rad | 100 rad |
sign | 1.9098593 sign | 3.8197187 sign | 5.7295780 sign | 7.6394374 sign | 9.5492967 sign | 11.4591561 sign | 13.3690154 sign | 15.2788748 sign | 17.1887341 sign | 19.0985935 sign | 21.0084528 sign | 22.9183122 sign | 24.8281715 sign | 26.7380309 sign | 28.6478902 sign | 30.5577496 sign | 32.4676089 sign | 34.3774683 sign | 36.2873276 sign | 38.1971870 sign | 40.1070463 sign | 42.0169057 sign | 43.9267650 sign | 45.8366244 sign | 47.7464837 sign | 49.6563431 sign | 51.5662024 sign | 53.4760618 sign | 55.3859211 sign | 57.2957805 sign | 59.2056398 sign | 61.1154992 sign | 63.0253585 sign | 64.9352179 sign | 66.8450772 sign | 68.7549366 sign | 70.6647959 sign | 72.5746553 sign | 74.4845146 sign | 76.3943740 sign | 78.3042333 sign | 80.2140927 sign | 82.1239520 sign | 84.0338114 sign | 85.9436707 sign | 87.8535301 sign | 89.7633894 sign | 91.6732488 sign | 93.5831081 sign | 95.4929675 sign | 97.4028268 sign | 99.3126862 sign | 101.2225455 sign | 103.1324049 sign | 105.0422642 sign | 106.9521236 sign | 108.8619829 sign | 110.7718423 sign | 112.6817016 sign | 114.5915610 sign | 116.5014203 sign | 118.4112797 sign | 120.3211390 sign | 122.2309984 sign | 124.1408577 sign | 126.0507171 sign | 127.9605764 sign | 129.8704358 sign | 131.7802951 sign | 133.6901545 sign | 135.6000138 sign | 137.5098732 sign | 139.4197325 sign | 141.3295919 sign | 143.2394512 sign | 145.1493106 sign | 147.0591699 sign | 148.9690293 sign | 150.8788886 sign | 152.7887480 sign | 154.6986073 sign | 156.6084667 sign | 158.5183260 sign | 160.4281854 sign | 162.3380447 sign | 164.2479041 sign | 166.1577634 sign | 168.0676228 sign | 169.9774821 sign | 171.8873415 sign | 173.7972008 sign | 175.7070602 sign | 177.6169195 sign | 179.5267789 sign | 181.4366382 sign | 183.3464976 sign | 185.2563569 sign | 187.1662163 sign | 189.0760756 sign | 190.9859350 sign |
The radian is the standard unit of angular measure, used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian is just under 57.3 degrees.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
radian | rad | The angle subtended at the center of a circle by an arc whose length is equal to the circle's radius. One full revolution encompasses 2π radians. | = 1 rad | Metric system SI |
radians | signs | radians | signs |
---|---|---|---|
1 | = 1.9098593496814 | 6 | = 11.459156098089 |
2 | = 3.8197186993629 | 7 | = 13.36901544777 |
3 | = 5.7295780490443 | 8 | = 15.278874797451 |
4 | = 7.6394373987257 | 9 | = 17.188734147133 |
5 | = 9.5492967484072 | 10 | = 19.098593496814 |
sign is the unit of plane angle, equals to 30°.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
sign | ≡ 30° | = 0.523599 rad | Metric system SI |
signs | radians | signs | radians |
---|---|---|---|
1 | = 0.52359876666667 | 6 | = 3.1415926 |
2 | = 1.0471975333333 | 7 | = 3.6651913666667 |
3 | = 1.5707963 | 8 | = 4.1887901333333 |
4 | = 2.0943950666667 | 9 | = 4.7123889 |
5 | = 2.6179938333333 | 10 | = 5.2359876666667 |
radians | signs |
---|---|
1 | = 1.9098593 |
0.5235988 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |