ASIN

Purpose:

Calculates the inverse sine of any expression.

ASIN(val)

val

A scalar, series or table.

A scalar, series, or table.

asin(-1..0.1..1)

$image\asinpic01.gif$

displays the the inverse sine from –1 to 1.

asin(1)

returns 1.57079633, or π/2.

asin(-2..0.1..2)

returns a 41 point complex series.

The inverse sine is defined as:

$image\asin01.gif$

for all complex z. The function is multi-valued and this definition places the branch cut in the complex plane at [-∞, -1] and [1, ∞].

$image\asin02.gif$

For |x| > 1, asin(x) returns a complex result.

The function calculates in radians unless degrees are specified with the SETDEGREE function.