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sin() : Sine Function

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Summary

Calculate the sine of an angle (in radians).

Signature 

sin(angleInRadians)

Parameters

Parameter Type Required Description
angleInRadians Number Yes The angle in radians

Returns

Type: Double

The sine of the angle (value between -1 and 1).

Examples

Basic Sine 

<p>sin(π/2) = </p>

Output:

<p>sin(π/2) = 1.000</p>

Convert Degrees to Radians First 

<p>sin(30°) = </p>
<p>sin(45°) = </p>
<p>sin(90°) = </p>

Output:

<p>sin(30°) = 0.500</p>
<p>sin(45°) = 0.707</p>
<p>sin(90°) = 1.000</p>

Calculate Wave Position 

<p>Y = </p>

Data:

doc.Params["model"] = new {
    amplitude = 10,
    angle = Math.PI / 4  // 45 degrees
};

Output:

<p>Y = 7.07</p>

Notes

  • Input must be in radians (not degrees)
  • Returns value between -1 and 1
  • For degrees, use: sin(radians(degrees))
  • Common values:
    • sin(0) = 0
    • sin(π/6) = 0.5
    • sin(π/4) ≈ 0.707
    • sin(π/2) = 1

See Also