JavaScript(JS) math method - tan

The tan method in JavaScript's Math object returns the tangent of a given angle, in radians. The tan method takes one argument, which is the angle in radians.

Here's an example usage:

const angleInRadians = Math.PI / 4;
const tangent = Math.tan(angleInRadians);
console.log(tangent); // 0.9999999999999999

In the above example, the Math.tan method is used to calculate the tangent of the angle π/4 radians (which is equivalent to 45 degrees). The result, which is 0.9999999999999999, is then logged to the console. Note that this is not exactly equal to 1, due to rounding errors in floating-point arithmetic.