Difference between revisions of "Manuals/calci/DCOS"
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<div style="font-size:30px">'''DCOS(x)'''</div><br/> | <div style="font-size:30px">'''DCOS(x)'''</div><br/> | ||
| − | * where '''x''' is the angle in | + | * where '''x''' is the angle in Degree |
* by default Calci use Radian as angle | * by default Calci use Radian as angle | ||
[[Manuals/calci/COS| COS]] can be used if the angle is in Radians. | [[Manuals/calci/COS| COS]] can be used if the angle is in Radians. | ||
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*It is the reciprocal of SEC function i.e, '''COS(x)''' = '''1 / SEC(x)'''.<br/> | *It is the reciprocal of SEC function i.e, '''COS(x)''' = '''1 / SEC(x)'''.<br/> | ||
*In a right angled triangle '''COS(x) = Adjacent side / Hypotenuse'''.<br/> | *In a right angled triangle '''COS(x) = Adjacent side / Hypotenuse'''.<br/> | ||
| − | *To obtain the value in Radians multiply with PI()/180 or use COS function COS( | + | *To obtain the value in Radians multiply with PI()/180 or use COS function COS(x) |
*DSEC returns NaN if 'x' is not real | *DSEC returns NaN if 'x' is not real | ||
The angle can be a single value or any complex array of values. | The angle can be a single value or any complex array of values. | ||
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'''DCOS(x)''' | '''DCOS(x)''' | ||
*'''x ''' is the angle in radians. | *'''x ''' is the angle in radians. | ||
| − | * COS(- | + | * COS(-x)=COS(x) |
* Result shows DCOS(abc)= NAN | * Result shows DCOS(abc)= NAN | ||
Revision as of 05:01, 5 November 2013
DCOS(x)
- where x is the angle in Degree
- by default Calci use Radian as angle
COS can be used if the angle is in Radians.
Description
- This function is used to obtain the COS value of 'x' in Degrees.
- It is the reciprocal of SEC function i.e, COS(x) = 1 / SEC(x).
- In a right angled triangle COS(x) = Adjacent side / Hypotenuse.
- To obtain the value in Radians multiply with PI()/180 or use COS function COS(x)
- DSEC returns NaN if 'x' is not real
The angle can be a single value or any complex array of values.
The following example shows how DSEC is applied to an array of numbers containing numbers 1..10.
- Type =1..10@DCOS in Calci
- Type =1..10@DCOS or 1..10@DCOS in ZOS
| Number | DCOS |
|---|---|
| 1 | 0.999847695 |
| 2 | 0.999390827 |
| 3 | 0.998629535 |
| 4 | 0.99756405 |
| 5 | 0.996194698 |
| 6 | 0.994521895 |
| 7 | 0.992546152 |
| 8 | 0.990268069 |
| 9 | 0.987688341 |
| 10 | 0.984807753 |
Examples
DCOS(x)
- x is the angle in radians.
- COS(-x)=COS(x)
- Result shows DCOS(abc)= NAN
| DCOS(Radian) | Value |
| DSEC(0) | 1 |
| DCOS(1) | 0.999847695 |
| DCOS(90) | 0 |