Mega Code Archive
Calculate sin^2(x),cos^2(x),tan^2(x)
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//package uk.me.jstott.jcoord;
/**
* Some utility functions used by classes in the uk.me.jstott.jcoord package.
*
* (c) 2006 Jonathan Stott
*
* Created on 11-Feb-2006
*
* @author Jonathan Stott
* @version 1.0
* @since 1.0
*/
class Util {
/**
* Calculate sin^2(x).
*
* @param x
* x
* @return sin^2(x)
* @since 1.0
*/
protected static double sinSquared(double x) {
return Math.sin(x) * Math.sin(x);
}
/**
* Calculate cos^2(x).
*
* @param x
* x
* @return cos^2(x)
* @since 1.0
*/
protected static double cosSquared(double x) {
return Math.cos(x) * Math.cos(x);
}
/**
* Calculate tan^2(x).
*
* @param x
* x
* @return tan^2(x)
* @since 1.0
*/
protected static double tanSquared(double x) {
return Math.tan(x) * Math.tan(x);
}
/**
* Calculate sec(x).
*
* @param x
* x
* @return sec(x)
* @since 1.0
*/
protected static double sec(double x) {
return 1.0 / Math.cos(x);
}
}
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