increment an index in a formula

[otomo]

I have on A1 0.2, in B1 1 and in C1 sin(3*$a$1*b1). I would like to copy the
formula in c2, c3 ..c100 such that it would do C2 sin(3*$a$1*b1*2)
C3
sin(3*$a$1*b1*3)
C4
sin(3*$a$1*b1*4)
and so forth. How do I do this?

Thanks

 

[Ron Rosenfeld]

I have on A1 0.2, in B1 1 and in C1 sin(3*$a$1*b1). I would like to copy the
formula in c2, c3 ..c100 such that it would do C2 sin(3*$a$1*b1*2)
C3
sin(3*$a$1*b1*3)
C4
sin(3*$a$1*b1*4)
and so forth. How do I do this?

Thanks

C1: =SIN(3*$A$1*$B$1*ROWS($1:1))

Then Fill Down. The Rows argument will increment.
--ron

 

[RagDyer]

Enter this in C2:

=SIN(3*$A$1*B$1*ROWS($1:2))

And copy down as needed.