Function: Asin

Description

Returns the arcsine, also known as inverse sine, value (in radians) of a given number.

Syntax

Asin(number)

Arguments

Number must be a => -1 and =< 1

Return value

This function returns a value in radians.

Calculated field example

Asin returns the following for these values of x:

x	asin(x)
-1.000	-π/2 ≈ 1.571
-√3/2 ≈ -0.866	-π/3 ≈ -1.047
-√2/2 ≈ -0.707	-π/4 ≈ -0.785
-1/2 ≈ -0.500	-π/6 ≈ -0.524
0.000	0.000
1/2 = 0.500	π/6 ≈ 0.524
√2/2 ≈ 0.707	π/4 ≈ 0.785
√3/2 ≈ 0.866	π/3 ≈ 1.047
1.000	π/2 ≈ 1.571