Find the angle of a line on a chart

[JOHN-38]

i would like to know the angle or degree of a trend line that i drawn on a stock chart , using a chart from a excell sheet or any software chart?

thank for any help

john-38

p.s. Is there a add on software for excell that does it , or can I buy a software that does it ?

 

[VoG]

Any help? http://www.excelforum.com/excel-charting/554312-finding-angle-of-slope.html