I don't get the actual value of sine function. Such as, If i write sin(0.18) it gives 0.179030 but my calculator gives sin 0.18 = 0.0031415874.......... Can you please help how can I get the actual value. Here I also add my code.
Code:#include<stdio.h> #include<math.h> int main() { long double value; value = sin(0.18); printf("%lf\n",value); return 0; }
Last edited by Salem; 08-03-2008 at 11:37 PM. Reason: Removed email address
Use the right data types, and properly inform printf() about what you're passing it. Use a double, and print it with %f.
Probably because your calculator defaults to degrees, whereas the math library always uses radians.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
I did not know this. Is there a provided function to convert it to degrees or do you have to do it by hand?Originally Posted by Salem
Do you know how trivial it is to do the conversion?
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
I thought it was R(180/PI)...I dunno sorry was just a question :P I dont know the standard libraries.
I usually do:
Edit: or was it the other way around, lol.Code:#define DEG_TO_RAD 0.0174532925 ... in_degrees = in_radians *= DEG_TO_RAD;
1 radians = 57.2957795 degrees
Last edited by mike_g; 08-04-2008 at 07:12 AM.
