Difference between revisions of "Pi"
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A full circle has <code>2*pi()</code> [[Radian|radians]]. | A full circle has <code>2*pi()</code> [[Radian|radians]]. | ||
| − | In [[Pascal]], <code>system.pi</code> is a [[Function|function]] which returns the value of π | + | In [[Free Pascal]], <code>system.pi</code> is a [[Function|function]] which returns the value of π. |
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<code>pi()/4</code> is the same as <code>arctan(1)</code>. | <code>pi()/4</code> is the same as <code>arctan(1)</code>. | ||
Revision as of 18:30, 27 January 2018
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π (greek letter pi) is the ratio of the circumference of a circle to its diameter.
π is about 3.14159265358979.
A full circle has 2*pi() radians.
In Free Pascal, system.pi is a function which returns the value of π.
pi()/4 is the same as arctan(1).
See also
system.pisystem.arctancalculates arc tangent.
