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**TAN(**//radians//**)**

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| **TAN** | Returns tangent. |
| //radians// | A numeric constant, variable or expression for the angle in radians. p is a constant which represents the ratio of the circumference and radius of a circle. There are 2p radians (or 360 degrees) in a circle. |

The **TAN** procedure returns the trigonometric tangent of an angle measured in //radians//. The tangent is the ratio of the angle's opposite side divided by its adjacent side.

**Return Data Type:     **REAL

**Example:**

**PI        EQUATE(3.1415926535898)     !The value of PI**

**Rad2Deg   EQUATE(57.295779513082)     !Number of degrees in a radian**

**Deg2Rad   EQUATE(0.0174532925199)     !Number of radians in a degree**

** CODE**

** Angle = 45 * Deg2Rad                 !Translate 45 degrees to Radians**

** TangentAngle = ****TAN****(Angle)            !Get the tangent of 45 degree angle**

**See Also:**

[[atan  return arctangent .htm|ATAN]]

[[sin  return sine .htm|SIN]]

[[asin  return arcsine .htm|ASIN]]

[[cos  return cosine .htm|COS]]

[[acos  return arccosine .htm|ACOS]]