SIN

Returns the sine of an angle in radians.

Signature

    ┌─────────┐
IN ─┤   SIN   ├─ OUT
    └─────────┘
FUNCTION SIN : ANY_REAL
  VAR_INPUT
    IN : ANY_REAL;
  END_VAR
END_FUNCTION

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

Inputs

Name

Type

Description

IN

ANY_REAL

Angle in radians.

Outputs

Name

Type

Description

Return value

ANY_REAL

The sine of IN, in the range [-1.0, 1.0]. Same type as IN.

Description

Returns the sine of IN, where IN is an angle expressed in radians. The result is in the range [-1.0, 1.0].

Example

result := SIN(REAL#0.0);          (* result = 0.0 *)
value := SIN(LREAL#1.5707963);   (* value ~ 1.0 *)

See Also

  • COS — cosine

  • TAN — tangent

  • ASIN — arc sine

References