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?

And what about a CASIO FX-39?
Guess what... the same result again:
Select "RAD" on the right side sliding switch;
"INV" "PI";
"sin";
Result: 0

"INV" "PI";
"cos";
Result: -1

"INV" "PI";
"/";
"2";
"="
"sin";
Result: 1