TAN¶

Returns the tangent of an angle in radians.

Signature¶

    ┌─────────┐
IN ─┤   TAN   ├─ OUT
    └─────────┘

FUNCTION TAN : ANY_REAL
  VAR_INPUT
    IN : ANY_REAL;
  END_VAR
END_FUNCTION

The return type matches the input type. TAN accepts REAL, LREAL.

Inputs

Name	Type	Description
`IN`	`ANY_REAL`	Angle in radians.

Outputs

Name	Type	Description
Return value	`ANY_REAL`	The tangent of IN. Same type as IN.

Returns the tangent of IN, where IN is an angle expressed in radians. The result is undefined when IN is an odd multiple of pi/2.

Try it

Source

result := TAN(REAL#0.0);          (* result = 0.0 *)
value := TAN(LREAL#0.7853982);   (* value ~ 1.0 *)