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PHP Manual :: asin



acosh || asinh || Math Functions || PHP Manual

(PHP 4, PHP 5, PHP 7)

asinArc sine

Description

float asin ( float $arg )

Returns the arc sine of arg in radians. asin() is the complementary function of sin(), which means that a==sin(asin(a)) for every value of a that is within asin()'s range.

Parameters

arg

The argument to process

Return Values

The arc sine of arg in radians

See Also



acosh || asinh || Math Functions || PHP Manual
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