Difference between revisions of "Pi"
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== See also == | == See also == | ||
− | * | + | * {{Doc|package=RTL|unit=system|identifier=pi|text=<code>system.pi</code>}} |
− | * | + | * {{Doc|package=RTL|unit=system|identifier=arctan|text=<code>system.arctan</code>}} calculates arc tangent. |
Revision as of 16:25, 24 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 Pascal, system.pi
is a function which returns the value of π.
This gives you the chance to shadow (redefine) pi()
.
pi()/4
is the same as arctan(1)
.
See also
system.pi
system.arctan
calculates arc tangent.