Reference > Methods tan(radians)¶ Definition¶ Double tan(Number radians) Description¶ Returns the trigonometric tangent of an angle. Parameter Definition¶ Name Type Description radians Number Angle in radians Examples¶ 1 2 3Double r1 = tan(0); // r1 == 0.0 Double r2 = tan(10); // r2 == 0.6483608274590866 Double r3 = tan(3); // r3 == -0.1425465430742778