Difference between revisions of "Manuals/calci/ACOS"
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*[http://en.wikipedia.org/wiki/Trigonometric_functions List of Trigonometric Functions] | *[http://en.wikipedia.org/wiki/Trigonometric_functions List of Trigonometric Functions] | ||
| − | *[http://en.wikipedia.org/wiki/Sine | + | *[http://en.wikipedia.org/wiki/Sine ACOS] |
Revision as of 04:30, 4 November 2013
ACOS(x)
- where x is in Radians
- by default Calci use Radian as angle
ACOS can be used if the angle is in degrees.
The angle can be a single value or any complex array of values.
For example ACOS(1..100) can give an array of the results, which is the ACOS value for each of the elements in the array. The array could be of any shape.
Description
Consider x = 90 then =ACOS(RADIANS(90)) gives 1
This function is the inverse function of cos in trignometry,and also it is called as cyclometric function.ACOS is described as arcCOS and denoted by cos-1 (x).In ACOS(X) ,x value should be with in -1&1.Here x is in radians. To convert a degree value to radian, multiply 'x' with PI()/180 or use the radians function RADIANS(X)
| Number | ACOS |
|---|---|
| 0.8 | 0.64350110879 |
| -0.22 | 1.792610797291 |
| 0.2 | 1.567305661202 |
Examples
ACOS(x)
- x is the angle in radians.
| TAN(Radian) | Value |
| ACOS(0) | 0 |
| ACOS(1) | 1.55740772465 |
| ACOS(90) | -1.99520041221 |