Java 使用Math类中的三角函数

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public class TrigonometricDemo {

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    public static void main(String[] args) {

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        double degrees = 45.0;

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        double radians = Math.toRadians(degrees);

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        System.out.format("The value of pi " + "is %.4f%n", Math.PI);

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        System.out.format("The sine of %.1f " + "degrees is %.4f%n",

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                degrees, Math.sin(radians));

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        System.out.format("The cosine of %.1f " + "degrees is %.4f%n",

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                degrees, Math.cos(radians));

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        System.out.format("The tangent of %.1f " + "degrees is %.4f%n",

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                degrees, Math.tan(radians));

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        System.out.format("The arcsine of %.4f " + "is %.4f degrees %n",

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                Math.sin(radians),

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                Math.toDegrees(Math.asin(Math.sin(radians))));//时代Java - nowjava.com

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        System.out.format("The arccosine of %.4f " + "is %.4f degrees %n",

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                Math.cos(radians),

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                Math.toDegrees(Math.acos(Math.cos(radians))));

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        System.out.format("The arctangent of %.4f " + "is %.4f degrees %n",

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                Math.tan(radians),

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                Math.toDegrees(Math.atan(Math.tan(radians))));

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    }

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}

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