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class Snkai{
public static void main(String[] args) {
double ¦È=25, rad;
rad=Math.toRadians(¦È);
double z=Math.pow(cos¦È,2);
System.out.println("³ÑÅÙ " + deg + "ÅÙ");
System.out.println("f=2*cos¦È*cos¦È-1" + (float)2z-1);
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double z=Math.pow(cos¦È,2);
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double z=Math.pow(Math.cos(¦È),2);
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double z = Math.cos(¦È) * Math.cos(¦È);
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