Thank you guys for all your help. My original Q contains two issues. One is why the value of sinX could be negative. another one is why sin10 doesn't equal to the number I got from my calculator. The following link reminded me sinX should be any number between -1 to 1. And You guys told me we use radian here.
http://answers.yahoo.com/question/index;_ylt=AkT6LqHXXOzRo.9JsY6iU38jzKIX;_ylv=3?qid=20071225035540AAGhg04 On Feb 1, 3:03 pm, visose <[email protected]> wrote: > > but it is not right to speak of 10 radians, because in Radians, the > > angles range from 0 to 2*Pi (numerically speaking from 0 to 6,2831...) > > I'm not sure, but i don't think that radians/degrees are limited to a > specific domain. Higher/lower values can be useful if you want to keep > count of the number of revolutions and not just the angle. > > On Feb 1, 8:22 pm, klint <[email protected]> wrote: > > > > > Thanks for clarifying, I see now that I didn't understand the initial > > problem... > > > On 1 Feb, 13:58, baldino <[email protected]> wrote: > > > > Sin 10 radians is -0,54 > > > Sin 10 degrees is 0,1736 > > > > but it is not right to speak of 10 radians, because in Radians, the > > > angles range from 0 to 2*Pi (numerically speaking from 0 to 6,2831...) > > > so 10 radians actually are equivalent to approx. (1,183 * Pi) > > > and in Degrees, the angles range from 0 to 360° > > > > 10 Radians are equivalent to 10*(180/Pi) = 572,95 Degrees = 212,95 > > > Degrees .... > > > > in GH, all angles are in Radians. > > > > On Feb 1, 1:41 pm, klint <[email protected]> wrote: > > > > > sin(10) IS -0.544021111 > > > > >http://upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Sin.svg/250p... > > > > <img src="http://upload.wikimedia.org/wikipedia/commons/thumb/b/b2/ > > > > Sin.svg/250px-Sin.svg.png"> > > > > /Lars > > > > > On 1 Feb, 03:38, CMRHM <[email protected]> wrote: > > > > > > See the attached picture: > > > > > >http://grasshopper3d.googlegroups.com/web/test_component_sin.JPG?hl=e... > > > > > > I am very curious about how this sin component works. In the > > > > > definision file, x value is 0,10,20,30,40,50 and 60. Y value also > > > > > output 7 values, but some of them are negative numbers. Like it gave > > > > > me sin10= -0.544. How could this be?- Hide quoted text - > > - Show quoted text -
