Trigonometric functions: Difference between revisions

Trigonometric functions (view source)

Revision as of 04:48, 18 March 2008

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→‎{{header|Java}}: Now uses Math functions to convert to and from degrees and radians, syntax highlighting

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Line 107: Java's <tt>Math</tt> class contains all six functions and is automatically included as part of the language. The functions all accept radians only, so conversion is necessary when dealing with degrees. The <tt>Math</tt> class also has a <tt>PI</tt> constant for easy conversion. <java>public class Trig { public static void main(String[] args) { //Pi / 4 is 45 degrees. All answers should be the same. double radians = Math.PI / 4; double degrees = 45.0; //sine System.out.println(Math.sin(radians) + " " + Math.sin(degrees * Math.~~PI / 180~~toRadians(degrees))); //cosine System.out.println(Math.cos(radians) + " " + Math.cos(degrees * Math.~~PI / 180~~toRadians(degrees))); //tangent System.out.println(Math.tan(radians) + " " + Math.tan(degrees * Math.~~PI / 180~~toRadians(degrees))); //arcsine double arcsin = Math.asin(Math.sin(radians)); System.out.println(arcsin + " " + ~~arcsin * 180 /~~ Math.PItoDegrees(arcsin)); //arccosine double arccos = Math.acos(Math.cos(radians)); System.out.println(arccos + " " + ~~arccos * 180 /~~ Math.PItoDegrees(arccos)); //arctangent double arctan = Math.atan(Math.tan(radians)); System.out.println(arctan + " " + ~~arctan * 180 /~~ Math.PItoDegrees(arctan)); } }</java> } Output: