ASIN function

Arcsine function. ASIN(x) returns the arcsine of x. The arcsine function is the inverse function of the sine function and calculates the angle for a given sine. x must be in the range [-1..1]. The result is an angle expressed in radians. To convert from radians to degrees, use the DEGREES function.

The argument x can be a real number, a complex number, or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the ASIN function applied to all elements.

Examples

ASIN(0) equals 0

ASIN(1) equals 1.5707963 (=PI/2)

DEGREES(ASIN(1)) equals 90

Calculator

Graph

Relation with ACOS and ATAN functions

Related functions

• SIN function: returns the sine of a number
• ACSC function: Inverse cosecant function (ACSC(x) = ASIN(1/x))
• ACOS function: Arccosine function
• ATAN function: Arctangent function
• Trigonometric functions

External links

• Inverse trigonometric functions on Wikipedia.