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Kikilicious08 · Aug 31, 2009, 01:23 PM

how to find radian from 3.85*10^8

KISS · Aug 31, 2009, 01:55 PM

Radians are a unitless number. There are 2*PI radians in 360 degrees.

What's your question? What are the unit of your number?
Degrees? Unitless, thus radians?

Capuchin · Aug 31, 2009, 03:21 PM

Originally Posted by KeepItSimpleStupid

Radians are a unitless number. There are 2*PI radians in 360 degrees.

What's your question? What are the unit of your number?
Degrees? Unitless, thus radians?

I've never heard that radians are unitless... they are measured in radians (or 'rad').

Originally Posted by KeepItSimpleStupid

There are 2*PI radians in 360 degrees.

See?

KISS · Aug 31, 2009, 05:05 PM

Well, OK.

Capuchin · Sep 1, 2009, 02:46 AM

In any case, I agree that the OP isn't making much sense. OP, can you phrase your question any clearer for us?

ebaines · Sep 1, 2009, 06:08 AM

Originally Posted by Capuchin

I've never heard that radians are unitless... they are measured in radians (or 'rad').

See?

I'll pick a nit here. Radians are indeed unitless, as are degrees. By this I mean that they have no component of distance, mass, or time, and consequently do not convert in the way that SI units do. From http://en.wikipedia.org/wiki/Radian:

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