What is tan() in Dart?

The tan() function returns the tangent of a number in radians.

The mathematical representation of the tan() function is shown below.

Syntax

double tan(double num)

Parameter

This function requires a number, num, that represents an angle in radians.

In order to convert degrees to radians, use the following formula:

radians = degrees * ( pi / 180 )

Return value

tan() returns the tangent of the number that is sent as a parameter.

Code

import 'dart:convert';
import 'dart:math';
void main() {
    //positive number in radians
    print("The value of tan(2.3): ${tan(2.3)}");
    // negative number in radians
    print("The value of tan(-2.3): ${tan(-2.3)}");
    //converting the degrees angle into radians and then applying tan()
    // degrees = 45.0
    // PI = 3.14159265
    // result first converts degrees to radians then apply tan
    double result=tan(45.0 * (pi / 180.0));
    print("The value of tan(45.0 * (pi / 180.0)): ${result}");
}