/*
 * trigfunctions.c
 */
#include <stdio.h>
#include <math.h>

int main(void)
{
  double pi=3.141592;
  double ss=0;
  double cc=0;
  double tt=0;
  double ee=2.71828;
  double lb=10000;
  
  printf("Constant pi is accepted as 3.141592 for the following calulations\n");
  printf("Constant ee is accepted as 2.71828 for the following calulations\n");

  printf("sin(xx) returns the sine of xx:\n");
  printf("sin of raidan 0 is: %.2f\n", sin(ss) );
  printf("sin of pi/6 is: %.2f\n\n", sin(pi/6) );
  printf("sin of pi/2 is: %.2f\n\n", sin(pi/2) );

  printf("cos(xx) returns the cosine of xx:\n");
  printf("cos of radian 0 is:%.2f\n", cos(cc) );
  printf("cos of pi/3 is: %.2f \n", cos(pi/3) );
  printf("cos of pi/2 is: %.2f \n", cos(pi/2) );
  
  printf("tan(xx) retunrs the tangent of xx\n");
  printf("tangent of radian 0 is: %.2f\n", tan(tt) );
  printf("tangent of pi/4 is: %.2f\n", tan(pi/4) );

  printf("log(xx) returns the natural logarithm ln(xx) where xx is larger than 0:\n");
  printf("log of ee is: %.2f\n\n", log(ee) );
  printf("log10(xx) returns the base 10 logarithm:\n" );
  printf("log of 10000 is: %.2f\n\n", log10(lb) );

  return 0;
}