Let's do it all in radians
Row 1: A1 blank, B1:'Radian',, C1:'Sin'
A2:A102: 0, 0.2, 0.4.... 2.0 (use Fill to get this)
B2: =SIN(A2) and copy down to B102

Now we need the transformation; stolen from website
http://www.bookrags.com/sciences/mat...s-mmat-04.html
R(x, y) = [xcos(t) - ysin(t)], [xsin(t) + ycos(t)]. If t is positive, the
direction of the rotation is counterclockwise; if t is negative, then the
rotation is clockwise

In D1 enter =SIN(RADIANS(45)) and since SIN(45)=COS(45) we will use this for
both
In E1: 'x-value'; F1: 'y-value'
In E2: =B2*$D$1-C2*$D$1 and in F2: =B2*$D$1+C2*$D$1
Copy down to row 102

Make graph using E1:F102
Add a 45degree line if needed

File to OP by private posting
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"Rbp9ad" wrote in message
...
This is more of a math question than a charting one. I am trying to plot
the sin curve rotated by 45 degrees. I started by plotting points for the
equation y = x + sin(x). This resulted in a skewing of
the curve. I want the sin curve to be determined by the distance traveled
along and symmetrical around the line y = x.