The radian is a unit of plane angle, equal to 180/π (or 360/2π) degrees, or about 57.2958 degrees, or about 57°17′45″. It is the standard unit of angular measurement in all areas of mathematics beyond the elementary level.

The radian is represented by the symbol "rad" or, more rarely, by the superscript c (for "circular measure"). For example, an angle of 1.2 radians would be written as "1.2 rad" or "1.2" (the second symbol is often mistaken for a degree: "1.2°"). However, the radian is mathematically considered a "pure number" that needs no unit symbol, and in mathematical writing the symbol "rad" is almost always omitted. In the absence of any symbol radians are assumed, and when degrees are meant the symbol ° is used.

The radian was formerly an SI supplementary unit, but this category was abolished in 1995 and the radian is now considered an SI derived unit. The SI unit of solid angle measurement is the steradian.

From Wikipedia under the GNU Free Documentation License
Sat Aug 15 07:54:58 2009

an angle of 242 degrees is equivalent to how many radians?
Q. its for my physics homework and i have no idea what radians are! please help!
Asked by Sylvia B - Mon Aug 31 21:18:31 2009 - - 2 Answers - 0 Comments

A. Answers 121 /90 Derivation Note that: = 180 Simply multiply 242 by /180.
Answered by |<$ - Mon Aug 31 21:25:03 2009

How do you convert degrees to radians if it's a decimal?
Q. I'm learning how to convert DMS (degrees,minutes,seconds) to radians but I don't know how to convert this: 71.72 degrees
Asked by mskris - Fri Aug 24 18:30:42 2007 - - 4 Answers - 0 Comments

A. convert degree to radian is radian= degree * pi/180 radian= 71.72pi/180 = 1.25 radian if u want to make sure that is right, how about check 60 degree to see the radian radian= 60 pi/180 = pi/3 that is the same answer on your book i guess
Answered by Math,Physic, Chemistry - Fri Aug 24 18:43:36 2007

What is the unit-vector notation, magnitude, angle in degrees, and angle in radians?
Q. (a) What is the sum of the following four vectors in unit-vector notation? For that sum, what are (b) the magnitude, (c) the angle in degrees, and (d) the angle in radians? E: 6.00m at +9.00 rad , F: 5.00m at -75.0degrees G: 4.00m at +1.20 rad , H: 6.00m at -210degrees
Asked by bryon_barker - Tue Jan 22 20:14:03 2008 - - 1 Answers - 0 Comments

A. You may solve this kind of problems graphically with a geometric method. But it would be very troublesome for me to plot and show to you. Besides, I do not know your geometry background. Hence here I will show you an analytical way. First convert every thing to x-y coordinates (unit in meter): E: (6.00*cos 9.00, 6.00*sin 9.00) F: (5.00*cos 75.0 , -5.00*sin 75.0 ) G: (4.00*cos 1.20, 4.00*sin 1.20) H: (6.00*cos 210 , -6.00*sin 210 ) Second perform the summation: S = (6.00*cos 9.00 + 5.00*cos 75.0 + 4.00*cos 1.20 + 6.00*cos 210 , 6.00*sin 9.00 - 5.00*sin 75.0 + 4.00*sin 1.20 - 6.00*sin 210 ) = (6.00*cos 9.00 + 5.00*cos 75.0 + 4.00*cos 1.20 + 6.00*cos 210 )i + (6.00*sin 9.00 - 5.00*sin 75.0 + 4.00*sin 1.20 - 6.00*sin 210 )j = I*i + J*j,… [cont.]
Answered by Hahaha - Thu Jan 24 18:20:25 2008

From Yahoo Answer Search: "radians"
Tue Nov 10 04:57:30 2009

Routes : un week-end de l'Ascension charge - Europe1
europe1.fr
Routes : un week-end de l'Ascension charge

Europe1, France

Les bouchons seront generalises sur le contournement Est de la capitale mais aussi sur l'ensemble des rocades (boulevard peripherique, A86, A104/RN104 dans les secteurs sensibles) et sur la plupart des axes radians tels que A13, A10, A6, RN118, RN12, ...
Ad Albano e "Festa per l'Europa" - Castellinews.it
castellinews.it
Ad Albano e "Festa per l'Europa"

Castellinews.it, Italy

Dalla piazza al teatro la festa continua alle 21 all'Alba Radians che porta in scena "Ballo Al Savoy", l'operetta di Alfred Gruneald Fritz Lohner e interpretata dalla compagnia di Corrado Abbati. In una societa sempre piu multietnica ha dichiarato ...
Concorso letterario rivolto a circa 350 studenti dell'ultimo anno ... - Castellinews.it
castellinews.it
Concorso letterario rivolto a circa 350 studenti dell'ultimo anno ...

Castellinews.it, Italy

(Albano Laziale - Attualita) - Nella sala del teatro Alba Radians di Albano, torna il prossimo 30 aprile l'appuntamento con la quarta edizione di "Sindaco per un giorno". Il concorso letterario, promosso e organizzato dall'assessorato alla Pubblica ...

From Google News Search: "radians"
Sun Nov 8 17:04:16 2009

Calculating distance - PHP
daniweb.com
Calculating distance - PHP

armyguydave69

Sun, 27 Sep 2009 01:35:01 GM

SELECT lat1, lon1, lat2, lon2, ( 1.0 * 60 * 1.1515 * DEGREES( ACOS( SIN( . RADIANS. ( lat1 ) ) * SIN( . RADIANS. ( lat2 ) ) + COS( . RADIANS. ( lat1 ) ) * COS( . RADIANS. ( lat2 ) ) * COS( . RADIANS. ( lon1 - lon2 ) ) ) ) ) dist FROM test order by dist ASC ...

Calculating distance with Mysql | MT-Soft en Espanol
es.mt-soft.com.ar
Calculating distance with Mysql | MT-Soft en Espanol

admin

hu, 01 Oct 2009 16:00:21 GM

The distance d between two points (x1,y1) and (x2,y2) can be calculated from the following equation (so long as x values are latitude and y values are longitude in . radians. , r is the radius of the sphere which is 3956 in miles): ...

MATLAB Central - File detail - Geodetic Toolbox
mathworks.com
MATLAB Central - File detail - Geodetic Toolbox

Mike Craymer

Wed, 13 Jun 2007 04:00:01 GM

dms2rad - Degrees,minutes​,seconds to . radians. rad2deg - . Radians. to degrees rad2dms - . Radians. to degrees,minutes​,seconds rad2sec - . Radians. to seconds sec2rad - Seconds to . radians. . Coordinate Conversions ell2utm - Ellipsoidal (lat,long) to ...

From Google Blog Search: "radians"
Sun Nov 8 17:04:17 2009