Example usage for java.lang Math toRadians

Introduction

In this page you can find the example usage for java.lang Math toRadians.

Prototype

public static double toRadians(double angdeg) 

Source Link

Document

Converts an angle measured in degrees to an approximately equivalent angle measured in radians.

Usage

From source file:MathTest.java

public static void main(String args[]) {
    int angles[] = { 0, 30, 45, 60, 90, 180 };
    for (int i = 0, n = angles.length; i < n; i++) {
        double rad = Math.toRadians(angles[i]);
        System.out.println("Angle: " + angles[i]);
        System.out.println(" Sine  : " + Math.sin(rad));
        System.out.println(" Cosine : " + Math.cos(rad));
        System.out.println(" Tangent: " + Math.tan(rad));
    }//from  w  ww .  j  a va2  s . c om
}

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From source file:TrigFun.java

public static void main(String[] args) {
    double rads, degs, tanA, coTanA;

    // Obtain angle in degrees from user
    degs = 120d;//  w w w.ja  v  a 2  s  . c om
    // Convert degrees to radian
    rads = Math.toRadians(degs);

    // Calculate tangent
    tanA = Math.tan(rads);
    System.out.println("Tangent = " + tanA);

    // Calculate cotangent
    coTanA = 1.0 / Math.tan(rads);
    System.out.println("Cotangent = " + coTanA);

    // Calculate arc-tangent
    rads = Math.atan(tanA);
    degs = Math.toDegrees(rads);
    System.out.println("Arc tangent: " + degs);

    // Calculate arc-cotangent
    rads = Math.atan(1 / coTanA);
    degs = Math.toDegrees(rads);
    System.out.println("Arc cotangent: " + degs);
}

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From source file:HypFun.java

public static void main(String[] args) {
    double rads, degs, sinHA, cosHA, tanHA, asinHA;

    // Obtain angle in degrees from user
    degs = 20d;/*w ww.j av a2s.  com*/
    // Convert degrees to radian
    rads = Math.toRadians(degs);

    // Calculate hyperbolic sine
    sinHA = (Math.exp(rads) - Math.exp(-rads)) / 2;
    System.out.println("Hyperbolic sine = " + sinHA);

    // Calculate Hyperbolic cosine
    cosHA = (Math.exp(rads) + Math.exp(-rads)) / 2;
    System.out.println("Hyperbolic cosine = " + cosHA);

    // Calculate hyperbolic tangent
    tanHA = sinHA / cosHA;
    System.out.println("Hyperbolic tangent = " + tanHA);

    // Calculate hyperbolic arc-sine
    asinHA = Math.log(sinHA + Math.sqrt((sinHA * sinHA) + 1.0));
    degs = Math.toDegrees(asinHA);
    System.out.println("Arc hyperbolic sine = " + degs);
}

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From source file:MainClass.java

public static void main(String args[]) {
    double theta = 120.0;

    System.out.println(theta + " degrees is " + Math.toRadians(theta) + " radians.");

    theta = 1.312;//from w  ww .j a v  a  2 s .c o  m
    System.out.println(theta + " radians is " + Math.toDegrees(theta) + " degrees.");
}

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From source file:Main.java

public static void main(String[] args) {
    for (int i = 0; i <= 180; i++) {
        double angleRad = Math.toRadians(i);
        AffineTransform at = createRandomTransform(angleRad);
        double extractedAngleRad = extractAngle(at);
        System.out/*from  w w  w.j av a  2  s .c  om*/
                .println("In: " + Math.toDegrees(angleRad) + " " + "Out " + Math.toDegrees(extractedAngleRad));
    }
}

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From source file:TrigSolv.java

public static void main(String[] args) {

    double a, b, c, angleA, radA;

    // Apllying Pythagoras' Theorem
    // Obtain sides from user
    System.out.println("Side c in terms of sides a and b");
    a = 10d;//from  w  w w.  j  av a 2s.  c  o  m
    b = 20d;
    c = Math.sqrt((a * a) + (b * b));
    System.out.println("Side c = " + c);

    // Using side/angle formula
    System.out.println("Side c in terms of side b and angle A");
    b = 30d;
    angleA = 20d;
    radA = Math.toRadians(angleA);
    c = b * Math.tan(radA);
    System.out.println("Side c = " + c);
}

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From source file:TrigonometricDemo.java

public static void main(String[] args) {
    double degrees = 45.0;
    double radians = Math.toRadians(degrees);

    System.out.format("The value of pi is %.4f%n", Math.PI);
    System.out.format("The sine of %.1f degrees is %.4f%n", degrees, Math.sin(radians));
    System.out.format("The cosine of %.1f degrees is %.4f%n", degrees, Math.cos(radians));
    System.out.format("The tangent of %.1f degrees is %.4f%n", degrees, Math.tan(radians));
    System.out.format("The arcsine of %.4f is %.4f degrees %n", Math.sin(radians),
            Math.toDegrees(Math.asin(Math.sin(radians))));
    System.out.format("The arccosine of %.4f is %.4f degrees %n", Math.cos(radians),
            Math.toDegrees(Math.acos(Math.cos(radians))));
    System.out.format("The arctangent of %.4f is %.4f degrees %n", Math.tan(radians),
            Math.toDegrees(Math.atan(Math.tan(radians))));

}

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From source file:TrigonometricDemo.java

public static void main(String[] args) {
    double degrees = 45.0;
    double radians = Math.toRadians(degrees);

    System.out.println("The value of pi is " + Math.PI);
    System.out.println("The sine of " + degrees + " is " + Math.sin(radians));
    System.out.println("The cosine of " + degrees + " is " + Math.cos(radians));
    System.out.println("The tangent of " + degrees + " is " + Math.tan(radians));
    System.out.println("The arc sine of " + Math.sin(radians) + " is "
            + Math.toDegrees(Math.asin(Math.sin(radians))) + " degrees");
    System.out.println("The arc cosine of " + Math.cos(radians) + " is "
            + Math.toDegrees(Math.acos(Math.cos(radians))) + " degrees");
    System.out.println("The arc tangent of " + Math.tan(radians) + " is "
            + Math.toDegrees(Math.atan(Math.tan(radians))) + " degrees");
}

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From source file:lambertmrev.LambertMRev.java

/**
 * @param args the command line arguments
 *//*from  w  w  w .ja v a  2 s  . c om*/
public static void main(String[] args) {
    // Want to test the Lambert class so you can specify the number of revs for which to compute
    //System.out.print("this is the frames tutorial \n");
    try {
        Frame inertialFrame = FramesFactory.getEME2000();
        TimeScale utc = TimeScalesFactory.getTAI();
        AbsoluteDate initialDate = new AbsoluteDate(2004, 01, 01, 23, 30, 00.000, utc);
        double mu = 3.986004415e+14;

        double a = 24396159; // semi major axis in meters
        double e = 0.72831215; // eccentricity
        double i = Math.toRadians(7); // inclination
        double omega = Math.toRadians(180); // perigee argument
        double raan = Math.toRadians(261); // right ascension of ascending node
        double lM = 0; // mean anomaly

        Orbit initialOrbit = new KeplerianOrbit(a, e, i, omega, raan, lM, PositionAngle.MEAN, inertialFrame,
                initialDate, mu);
        //KeplerianPropagator kepler = new KeplerianPropagator(initialOrbit);

        // set geocentric positions
        Vector3D r1 = new Vector3D(-6.88999e3, 3.92763e4, 2.67053e3);
        Vector3D r2 = new Vector3D(-3.41458e4, 2.05328e4, 3.44315e3);
        Vector3D r1_site = new Vector3D(4.72599e3, 1.26633e3, 4.07799e3);
        Vector3D r2_site = new Vector3D(4.70819e3, 1.33099e3, 4.07799e3);

        // get the topocentric positions
        Vector3D top1 = Transform.geo2radec(r1.scalarMultiply(1000), r1_site.scalarMultiply(1000));
        Vector3D top2 = Transform.geo2radec(r2.scalarMultiply(1000), r2_site.scalarMultiply(1000));

        // time of flight in seconds
        double tof = 3 * 3600;

        // propagate to 0 and tof
        Lambert test = new Lambert();

        boolean cw = false;
        int multi_revs = 1;
        RealMatrix v1_mat;
        Random randomGenerator = new Random();

        PrintWriter out_a = new PrintWriter("out_java_a.txt");
        PrintWriter out_e = new PrintWriter("out_java_e.txt");
        PrintWriter out_rho1 = new PrintWriter("out_java_rho1.txt");
        PrintWriter out_rho2 = new PrintWriter("out_java_rho2.txt");

        // start the loop
        double A, Ecc, rho1, rho2, tof_hyp;

        long time1 = System.nanoTime();
        for (int ll = 0; ll < 1e6; ll++) {

            rho1 = top1.getZ() / 1000 + 1e-3 * randomGenerator.nextGaussian() * top1.getZ() / 1000;
            rho2 = top2.getZ() / 1000 + 1e-3 * randomGenerator.nextGaussian() * top2.getZ() / 1000;
            //tof_hyp = FastMath.abs(tof + 0.1*3600 * randomGenerator.nextGaussian());
            // from topo to geo
            Vector3D r1_hyp = Transform.radec2geo(top1.getX(), top1.getY(), rho1, r1_site);
            Vector3D r2_hyp = Transform.radec2geo(top2.getX(), top2.getY(), rho2, r2_site);
            //            System.out.println(r1_hyp.scalarMultiply(1000).getNorm());
            //            System.out.println(r2_hyp.scalarMultiply(1000).getNorm());
            //            System.out.println(tof/3600);
            test.lambert_problem(r1_hyp.scalarMultiply(1000), r2_hyp.scalarMultiply(1000), tof, mu, cw,
                    multi_revs);

            v1_mat = test.get_v1();

            Vector3D v1 = new Vector3D(v1_mat.getEntry(0, 0), v1_mat.getEntry(0, 1), v1_mat.getEntry(0, 2));
            //            System.out.println(v1);
            PVCoordinates rv1 = new PVCoordinates(r1_hyp.scalarMultiply(1000), v1);
            Orbit orbit_out = new KeplerianOrbit(rv1, inertialFrame, initialDate, mu);
            A = orbit_out.getA();
            Ecc = orbit_out.getE();

            //            System.out.println(ll + " - " +A);
            out_a.println(A);
            out_e.println(Ecc);
            out_rho1.println(rho1);
            out_rho2.println(rho2);
        }
        long time2 = System.nanoTime();
        long timeTaken = time2 - time1;

        out_a.close();
        out_e.close();
        out_rho1.close();
        out_rho2.close();

        System.out.println("Time taken " + timeTaken / 1000 / 1000 + " milli secs");

        // get the truth
        test.lambert_problem(r1.scalarMultiply(1000), r2.scalarMultiply(1000), tof, mu, cw, multi_revs);
        v1_mat = test.get_v1();
        Vector3D v1 = new Vector3D(v1_mat.getEntry(0, 0), v1_mat.getEntry(0, 1), v1_mat.getEntry(0, 2));
        PVCoordinates rv1 = new PVCoordinates(r1.scalarMultiply(1000), v1);
        Orbit orbit_out = new KeplerianOrbit(rv1, inertialFrame, initialDate, mu);
        //System.out.println(orbit_out.getA());
    } catch (FileNotFoundException ex) {
        Logger.getLogger(LambertMRev.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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From source file:fr.amap.lidar.amapvox.commons.GTheta.java

public static void main(String[] args) {

    LeafAngleDistribution distribution = new LeafAngleDistribution(LeafAngleDistribution.Type.EXTREMOPHILE);

    GTheta dirTrans = new GTheta(distribution);
    //dirTrans.buildTable(180);

    double densityProbability = dirTrans.getGThetaFromAngle(Math.toRadians(0), false);
    double densityProbability2 = dirTrans.getGThetaFromAngle(Math.toRadians(180), false);

    System.out.println("test");
}

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