On Sep 14, 7:53�pm, "Bernard Liengme" wrote:
<snip
How to avoid: round to 12 decimal places =ROUND(COS(RADIANS(90)),12)
You handheld calculator does this automatically, so you never see it with
that machine
<snip

12 decimal places would give you an accuracy of about 6 inches / 150mm
in measuring the distance between the earth & the sun - good enough
for government work.

Alan Lloyd