The Student Room Group
Reply 1
Inv.. as in inverse?

Is there a 2ndF (Second Function) button? Try hitting that, and then the appropriate trigo function.
Reply 2
Yeah, as in inverse.

It has 'In' but I don't think that is it. Its also got 'shift', but it only has sin-1, cos-1, etc on the top of the respective buttons :|
Reply 3
Yousuf
Yeah, as in inverse.

It has 'In' but I don't think that is it. Its also got 'shift', but it only has sin-1, cos-1, etc on the top of the respective buttons :|

So what's the problem? Hit shift, and then the respective trigo button.
Reply 4
What do you get if you say

0.5
shift
sin

?
Reply 5
I get 'syntax error'
Reply 6
Do [shift] [sin] 0.5. It'll work.
Reply 7
Go to http://world.casio.com/calc/download/en/manual/ it has manuals for Casio calculators.
Reply 8
Thanks guys I managed to crack it - turns out you needed to stick in brackets (silly me!)
Reply 9
I still can't find out how to get it?
Reply 10
Yousuf
It has 'In' but I don't think that is it.

The button that looks like "In" actually represents the ln(x)\ln(x) (natural logarithm) function. Wikipedia it. :smile: