asin() : Arcsine (Inverse Sine)

Summary

Calculate the arcsine (inverse sine) of a value, returning the angle in radians.

Signature

asin(value)

Parameters

Returns

Type: Double

The angle in radians (between -π/2 and π/2).

Examples

Basic Arcsine

<p>asin(0.5) =  radians</p>
<p>asin(0.5) = °</p>

Output:

<p>asin(0.5) = 0.524 radians</p>
<p>asin(0.5) = 30.0°</p>

Find Angle from Ratio

<p>Angle: °</p>

Data:

doc.Params["model"] = new {
    opposite = 5,
    hypotenuse = 10
};

Output:

<p>Angle: 30.0°</p>

Notes

• Value must be between -1 and 1
• Returns angle in radians
• Result range: -π/2 to π/2
• Inverse of sin() function
• For degrees, use: degrees(asin(value))

See Also

• sin Function
• acos Function
• atan Function
• degrees Function