Difference between revisions of "Manuals/calci/DSEC"
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*It is the reciprocal of COS function i.e, '''SEC(x)''' = '''1 / COS(x)'''.<br/> | *It is the reciprocal of COS function i.e, '''SEC(x)''' = '''1 / COS(x)'''.<br/> | ||
*In a right angled triangle '''SEC(x) = Hypotenuse / Adjacent side'''.<br/> | *In a right angled triangle '''SEC(x) = Hypotenuse / Adjacent side'''.<br/> | ||
| − | *To obtain the value in Radians multiply with PI()/180 or use SEC function SEC( | + | *To obtain the value in Radians multiply with PI()/180 or use SEC function SEC(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. | ||
Revision as of 05:16, 5 November 2013
DSEC(x)
- where x is the angle in Degrees
- by default Calci use Radian as angle
SEC can be used if the angle is in Radians.
Description
- This function is used to obtain the Secant value of 'x' in degrees.
- It is the reciprocal of COS function i.e, SEC(x) = 1 / COS(x).
- In a right angled triangle SEC(x) = Hypotenuse / Adjacent side.
- To obtain the value in Radians multiply with PI()/180 or use SEC function SEC(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@DSEC in Calci
- Type =1..10@DSEC or 1..10@DSEC in ZOS
| Number | DSEC |
|---|---|
| 1 | 1.000152328 |
| 2 | 1.000609544 |
| 3 | 1.001372346 |
| 4 | 1.002441898 |
| 5 | 1.003819838 |
| 6 | 1.00550828 |
| 7 | 1.007509825 |
| 8 | 1.009827573 |
| 9 | 1.012465126 |
| 10 | 1.015426612 |
Examples
DSEC(x)
- x is the angle in radians.
- SEC(-X)=-SEC(X)
- Result shows DSEC(abc)= NAN
| DSEC(Radian) | Value |
| DSEC(12) | 1.0223405948650293 |
| DSEC(81) | 6.392453221499659 |
| DSEC(-81) | 6.392453221499659 |