trader_acos
(PECL trader >= 0.2.0)
trader_acos — Vector Trigonometric ACos
説明
array trader_acos
( array
$real
)
Calculates the arc cosine for each value in
real and returns the resulting array.
パラメータ
-
real -
実数値の配列
返り値
Returns an array with calculated data or false on failure.
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