cotangent in java

1         
2strictfp class TrigFun {
3  public static void main(String[] args) {
4    double rads, degs, tanA, coTanA;
5
6    // Obtain angle in degrees from user
7    degs = 120d;
8    // Convert degrees to radian
9    rads = Math.toRadians(degs);
10
11    // Calculate tangent
12    tanA = Math.tan(rads);
13    System.out.println("Tangent = " + tanA);
14
15    // Calculate cotangent
16    coTanA = 1.0 / Math.tan(rads);
17    System.out.println("Cotangent = " + coTanA);
18
19    // Calculate arc-tangent
20    rads = Math.atan(tanA);
21    degs = Math.toDegrees(rads);
22    System.out.println("Arc tangent: " + degs);
23
24    // Calculate arc-cotangent
25    rads = Math.atan(1 / coTanA);
26    degs = Math.toDegrees(rads);
27    System.out.println("Arc cotangent: " + degs);
28  }
29}
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