Euler Identity in Home

[jebem]

(04-04-2014 09:26 PM)Joe Horn Wrote:  HEY... the HP-65 returns 0 for SIN(3.141592654). What's up with that?

The same result for HP-25. Just tried it a few minutes ago.
"f" "SCI" "3"
"g" "RAD";
"g" "PI";
"ENTER";
"f" "sin";
Result: 0.000 00

"Rotate down";
"f" "cos";
Result: -1.000 00

"g" "PI";
"ENTER";
"2";
"/"
"f" "sin";
Result: 1.000 00

That's what I remember from the classic calculators like the HP-55 and HP-67 as well.