what is Sin to the negative first power times 35/55?
It is not a negative power although i know it looks like one.
It is
inverse sin (35/55)
also know as
arcsin (35/55)
The answer will be an angle so your calculator needs to be set to degrees or radians, which ever you are working in.
It is important that you check this. There will be a little D or R at the top of your screen.
On most calculators you need to press the Inv or the second function button before you press sin (35/55) =
+118654 
