🚀 go-pugleaf

Hi,

I have some other questions also.  I have to make a program that uses
infinite series to approximate the value of SIN (a).  The line that my
teacher gave me for this is: "sin(a)=a-a3/3!+a5/5!-a7/7!+a9/9!...."
What does this translate to in the way of a formula?  I need to know
this so I can write a procedure that will use the variable that will
obviously be involved.

Another problem concerns writing a procedure that will computer the
binary XOR's of two decimal numbers.  I know how to get the binary
values for each of the decimal numbers (using MOD & DIV), but how do I
compare the two binary numbers when I'm finished with this?  Is there
some kind of comparison command like with strings?

Please advise.

Thanks in advance!