whats the key for inverse sin?

\(sin\ \alpha = a\\ \color{blue}asin \ a= \alpha\)

\(sin\ 30°=0.5\\ \color{blue} asin\ 0.5=30°\)

!

There are a few different ways to get the inverse sin .

You can press the " 2nd " button in the top left, then press " acos "

...or...

You can type in " acos( ) ," " arccos( ) ," or " cos^-1( ) " into the bar.