typing in Pi

Is there a fast key code to type in the value of Pi? ALso when trying to
draw a line at an angle of 1/4 pi radians , how would you type this in -
so far I know how to to specify whole values such as @2<2r but when
trying to type in a fractional pi value I'm getting a syntax error

 

!pi returns the value of pi to the command line.

....or use lisp expressions: (/ pi 2.0), (/ pi 4.0), (* pi 1.5), etc.

However, you can't use these formats in a command string with the @
function. When working in radians, you can specify decimal values only, for
example, @2<2.123r. If you're working in the common fractions of pi (1/4,
1/2, 3/4, etc.) it may be easier to just use degree notation and use 45, 90,
135 respectively.
___

 

ok thanks alot

 

May I remind you, also the value of 355 divided by 113 is approximartely
accurate enough within most calculations when you are handicapped by the
very basic electronic calculator without scientific features. And this rule
of thumb is very easy to remember, too.

 

why not just remember 3.14159. in reality 3.14 should be close enough for
any typical layout (except a machine shop, maybe)

 

another way is to open the Windows calculator, set it for sci. mode and hit
pi. it gives a 32 digit number.
-S