[Ilugc] .a-tip-a-day. (bc - interactive calculator)
- From: girishvenkatachalam@xxxxxxxxx (Girish Venkatachalam)
- Date: Wed Sep 23 07:28:03 2009
On Wed, Sep 23, 2009 at 6:30 AM, Kapil Hari Paranjape <kapil@xxxxxxxxxxx> wrote:
Hello,
?$ bc -l
which is required if you want to use things like sine, cosine, etc.
This is driving me mad Kapil.
First off many thanks for this great tip. Much appreciated.
But I have a problem. How will I convert from degrees to radians?
Also sine and cosine are to be given as s() and c().
http://www.gnu.org/software/bc/manual/html_node/bc_18.html
That is not driving me mad.
But how to ask for sin(30), sin(60), sin(90) in degrees to radians?
Is there a simple math formula or will the same bc do it for me in
non interactive mode(converting deg to radians and vice versa) ?
Apropos of that, we can use expr for non interactive math. You don't
have exponentiation though. Also use \ before a * for multiplication!
Thanks.
-Girish
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