pi() : Pi Constant

Summary

Get the mathematical constant π (pi), approximately 3.14159.

Signature

pi()

Parameters

None.

Returns

Type: Double

The value of π (approximately 3.14159265358979).

Examples

Circle Calculations

<p>Circumference: </p>
<p>Area: </p>

Data:

doc.Params["model"] = new {
    radius = 5
};

Output:

<p>Circumference: 31.42</p>
<p>Area: 78.54</p>

Angle Conversions

<p>90° =  radians</p>
<p>180° =  radians</p>
<p>360° =  radians</p>

Output:

<p>90° = 1.571 radians</p>
<p>180° = 3.142 radians</p>
<p>360° = 6.283 radians</p>

Trigonometric Calculations

<p>sin(π/6) = </p>
<p>cos(π/3) = </p>

Output:

<p>sin(π/6) = 0.500</p>
<p>cos(π/3) = 0.500</p>

Notes

• Returns constant value (no parameters)
• Value: 3.14159265358979…
• Used in circle, trigonometry, and wave calculations
• More accurate than using 3.14 or 22/7
• For Euler’s number, use e()

See Also

• e Function
• sin Function
• cos Function
• radians Function
• degrees Function