Thanks people!!

That really helped me, the website just made it sound sooo complicated. I
fully understand it and thank you greatly for your assistance!

"Bernard Liengme" wrote:

David's answer is correct but to save you remembering is it PI()/180 or
180/Pi()
use the RADIANS and DEGREES function.
A1 has 45 entered (meaning 45 degrees), to get the tan of this angle use
=TAN(RADIANS(A1))
B1 has 0.866 and you what the asin (inverse sine), use =DEGREES(ASIN(B1))

best wishes with GCSE - I took mine 50 years ago when it was called 'O'
level
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"!!HELP!!" wrote in message
...
Hi,

I am doing my GCSE at the moment and I have come up with a fomula to
calculate the area of any polygon. My formula includes TAN but when I use
the
TAN function on Excel it gives me a completely different answer to my
calculator.

Please help, is TAN different in America? Sorry if this sounds really
stupid
but I need to know.

Thanks