Hey rad,whats a radian

[radian]

get asked that a lot,,so here,s the explanation

The radian is a unit of plane angle, equal to 180/π degrees, or about 57.2958 degrees. 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 "1.2c" (the second symbol can be 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.

[Concord]

on a unit circle ( circle of radius 1) an angle with the measure of 1 radian will sweep out an arc of 1 units length.

[Lucifer]

Why don't you just answer "about 60 degrees" and leave it at that?

[ed]

It is also a motorbike, a Yamaha Radian. Some might say a modern equivelent would be something like a Yamaha Fz6, also known as a Fazer.
But you wouldn't rename yourself Fazer just for the sake of your bike, would you?

[wrtlprnft]

Why don't you just answer "about 60 degrees" and leave it at that?

Woot, n = 3

[Word]

Why don't you just answer "about 60 degrees" and leave it at that?

yeah you should put that as instant chat

[Jonathan]

A radian is over 57 times as good as a degree.

[radian]

now there,s a thought ed,hahaha only joking .. nooooo its radian..and yea i had one not to long ago..and if you look at my avatar u can see one, ,oh and its about 60 degrees btw, ,damn thats short, ,passes luzi a cup of tea

[kyle]

but if it was 60 degress that would mean there are 6 of them in a circle, but their are actually about 6.28318531 (2 Π)

[Lucifer]

but if it was 60 degress that would mean there are 6 of them in a circle, but their are actually about 6.28318531 (2 Π)

I said about 60 degrees. If someone were to ask you how many degrees are in a radian in 1 significant figure, then 1 radian = 60 degrees.

Haven't you used 10 for little g before? Jeez.

[wrtlprnft]

/me thinks the answer should be 45° because everyone knows that π := 4

[kyle]

Haven't you used 10 for little g before? Jeez.

maybe the first few times i did problems now i have a hard time using 9.8 (is used now in college) and not 9.81066(was used for all of homework in high school)

/me thinks the answer should be 45° because everyone knows that π := 4

heh, Π is technically = 4 in my state (an old law)

[wrtlprnft]

When I was in Canada they wanted me to use 9.80 (three significant digits). And no, the school wasn't on some really high mountain.

[Lucifer]

There's probably enough variance across the surface of the earth to make 9.81066 too much precision. If I wanted that much precision, I think I'd have to compute acceleration from the Law of Gravity and take very precise measurements of my distance from the center of the earth.

I've seen instructors allow 9.80, 9.8, and 9.81. I've never bothered to look it up, my two physics textbooks use 9.81. However, the textbook used for Conceptual Physics (i.e. Physics without Math) uses 10 for little g. I didn't know that until last week. Now I understand why conceptual physics students have been getting confused when I tell them to multiply by 9.8 and see what they get. I think I'll just stick to saying "multiply by little g", but I really hate having a little g constant and a big G constant.

[Tank Program]

It's 9.82 in Sweden, or so I was told to use there.