Java Math atan2Uso do método e exemplo

Java Math Mathematical Methods

Java Math atan2O método converte as coordenadas cartesianas (x, y) em coordenadas polares (r, θ) e retorna o ângulo theta (θ).

: The coordinates x and y represent a point in the two-dimensional plane.2A sintaxe do método é:

Math.atan2(double y, double x)

Right-angled coordinates x and yatan2O método estático. Portanto, podemos chamar diretamente o método usando o nome da classe Math.

: The coordinates x and y represent a point in the two-dimensional plane.2parâmetros

• x / y-直角坐标x和y

Right-angled coordinates x and yNote

: The coordinates x and y represent a point in the two-dimensional plane.2atan

• By returning the value of coordinates(x,y)Convert to coordinates(r, θ)Return angle θ

Example: Java Math.atan2()

class Main {
　　public static void main(String[] args) {
　　　　//two coordinates x and y
　　　　double x =　3.7;
　　　　double y =　6.45;
　　　　//Get angle θ
　　　　double theta = Math.atan2(y, x);
　　　　System.out.println(theta);　　　　　　　　　　　　　　　　　　　//　1.0499821573815171
　　　　//Convert to degrees
　　　　System.out.println(Math.toDegrees(theta));　　　　//　60.15954618200191
　　}
}

Here, atan2The () method converts coordinates(x,y) conversionFor coordinates(r, θ)and return the angle theta (θ).

We have usedMath.toDegrees()The method converts an angle to angle θ.

Java Math Mathematical Methods