Changes

==Description==

==Description==

*This function is used to obtain the Secant value of 'x' in degrees.<br/>

*This function is used to obtain the Secant value of 'x' in degrees.<br/>

*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(X)

*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