### TAN(number)

Returns the tangent of an angle (Double).

 number The number you want the tangent of in radians (Double).

 REMARKS
 * This function takes an angle and returns the ratio of two sides of a right angled triangle.* The tangent ratio is the length of the side opposite the angle divided by the length of the side adjacent to the angle.* If your argument is in degrees, multiple it by PI/180 to convert it to radians.* If your argument is in radians, multiply it by 180/PI to convert it to degrees.* The reciprocal of this function (1/TAN) is called the cotangent.* You can use the ATN function to return the inverse of this function (arc-tangent).* You can use the COS function to return the cosine of a number.* You can use the SIN function to return the sine of a number.* The equivalent Excel function is Application.WorksheetFunction.TAN* The equivalent .NET function is System.Math.Tan* For a working example refer to the Trigonometry page.* For the Microsoft documentation refer to docs.microsoft.com

`Tan(45)=1.62 `