Returns the trigonometric arc sine of a number, in radians.

Syntax:

ASIN(number)

Parameters:

number: A number between -1 and 1.

Returns:

Arc sine of a number (radians).

Example:

Where x=1 and y=0.5,
ASIN(x-y)
returns 0.52359878

See also:

SIN, COS, ACOS, TAN, ATAN

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