COS¶

Returns the cosine of an angle in radians.

Signature¶

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

FUNCTION COS : ANY_REAL
  VAR_INPUT
    IN : ANY_REAL;
  END_VAR
END_FUNCTION

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

Inputs

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

Outputs

Name	Type	Description
Return value	`ANY_REAL`	The cosine of IN, in the range [-1.0, 1.0]. Same type as IN.

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

Try it

Source

result := COS(REAL#0.0);          (* result = 1.0 *)
value := COS(LREAL#3.1415927);   (* value ~ -1.0 *)