Oracle ACOS() function

Description

The ACOS() function is used to calculate the arc cosine (inverse cosine) of a specified number. The function returns a value in the range of 0 to pi, expressed in radians and returns an error message when the value of the number is not in the range -1 to 1.
The function takes any numeric or nonnumeric data type (can be implicitly converted to a numeric data type) as an argument.
If the argument is BINARY_FLOAT, then the function returns BINARY_DOUBLE. Otherwise, the function returns the same numeric data type as the argument.

Uses of Oracle ACOS() Function

• Trigonometric Calculations: Determine the angle corresponding to a given cosine value.


• Mathematical Modeling: Useful in mathematical models and simulations requiring inverse trigonometric functions.


• Engineering Applications: Applied in various engineering fields for angle calculations in radian measure.


• Data Analysis: Assist in data analysis involving trigonometric transformations and calculations.


• Scientific Research: Employed in scientific research for computations involving trigonometric functions and angles.

Syntax:

ACOS(N)

Parameters:

Pictorial Presentation of ACOS() function

Example

The following statement shows that the statement will return the arc cosine value of the number defined as an argument.

SELECT ACOS(1) FROM dual;

Here is the result.

   ACOS(1)
----------
         0

Example: ACOS() function using fractional number

The following statement will return arc cosine of the fractional value defined in an argument.

SELECT ACOS(.053211) FROM dual;

Here is the result.

ACOS(.053211)
-------------
   1.51756018

Example : ACOS() function using zero(0)

The statement below will return the arc cosine value of the number defined as an argument.

SELECT ACOS(0) FROM dual;

Here is the result.

   ACOS(0)
----------
1.57079633

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