ATAN

Returns the arctangent, or inverse tangent, of a number

Syntax

ATAN(number)

Arguments

Argument	Description	Required
number	The tangent of the angle you want	Required

Examples

Arctangent of 0

Arctangent of -1 (-45 degrees in radians)

Arctangent of positive number

Related Functions

Other Math functions:

• ABS - Returns the absolute value of a number
• ACOS - Returns the arccosine, or inverse cosine, of a number
• ASIN - Returns the arcsine, or inverse sine, of a number
• CEILING - Rounds a number up to the nearest integer or to the nearest multiple of significance
• COS - Returns the cosine of the given angle
• EXP - Returns e raised to the power of a given number
• FACT - Returns the factorial of a number
• FLOOR - Rounds a number down to the nearest multiple of significance
• INT - Rounds a number down to the nearest integer
• LN - Returns the natural logarithm of a number
• LOG - Returns the logarithm of a number to a specified base
• LOG10 - Returns the base-10 logarithm of a number
• MOD - Returns the remainder after a number is divided by a divisor
• PI - Returns the value of pi (π)
• POWER - Returns the result of a number raised to a power
• RAND - Returns a random number greater than or equal to 0 and less than 1.
• ROUND - Returns the number after rounding it to a certain number of decimal places.
• ROUNDDOWN - Returns a number rounded to a certain number of decimal places. ROUNDDOWN rounds all numbers down.
• ROUNDUP - Returns a number rounded up to a certain number of decimal places. ROUNDUP rounds all numbers up.
• SIGN - Determines the sign of a number
• SIN - Returns the sine of the given angle
• SQRT - Returns the square root of a number
• SUM - Returns the sum of all numbers in the provided arguments
• TAN - Returns the tangent of the given angle
• TRUNC - Truncates a number to an integer by removing the fractional part

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