sin() : Sine Function

Calculate the sine of an angle (in radians).

Signature

sin(angleInRadians)

Parameters

Returns

Type: Double

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

Examples

Basic Sine

<p>sin(π/2) = {{format(sin(pi() / 2), '0.000')}}</p>

Output:

<p>sin(π/2) = 1.000</p>

Convert Degrees to Radians First

<p>sin(30°) = {{format(sin(radians(30)), '0.000')}}</p>
<p>sin(45°) = {{format(sin(radians(45)), '0.000')}}</p>
<p>sin(90°) = {{format(sin(radians(90)), '0.000')}}</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 = {{format(model.amplitude * sin(model.angle), '0.00')}}</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

• cos Function
• tan Function
• asin Function
• radians Function
• pi Function