asin

returns the arc sine of a number in radians.

# Metadata

Platforms: desktop, server, mobile OS: mac, windows, linux, ios, android Introduced: 1.0 Security:

# Syntax

the asin of number

# Params

- number : A number between -1 and 1, or an expression that evaluates to such a number.

# Examples

the asin of .225

sin(asin(.5))

asin(pi/4 - sin(myAngle))

# Description

Use the asin function to find the arc sine of a number.

The arc sine of number is an angle whose sine is equal to number. In other words, asin is an inverse of the sin function.

If a math operation on finite inputs produces a non-finite output, an execution error is thrown. See math operations for more information.

# Tags

math,

# See

- **keyword:** inverse - **constant:** pi - **function:** sin - **control structure:** function - **glossary:** radian, custom function, return, degree, math operation