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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 Radians
* 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.
*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(X)
*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.
'''DCOS(x)'''
'''DCOS(x)'''
*'''x ''' is the angle in radians.
*'''x ''' is the angle in radians.
* COS(-X)=COS(X)
* COS(-x)=COS(x)
* Result shows DCOS(abc)= NAN
* Result shows DCOS(abc)= NAN