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asin()

Calculates the angle whose sine is the specified number, or the arc sine. This is the inverse operation of sin().

Syntax

asin(x)

Parameters

Name Type Required Description
x real A real number in range [-1, 1] used to calculate the arc sine.

Returns

Returns the value of the arc sine of x. Returns null if x < -1 or x > 1.

Example

print asin(0.5)

Results

result
0.5235987755982989