How do you find the value of ##csc 0##?

There two way to work this out.

1) Look on a ##csc## graph graph{csc x [-0.61, 17.45, -4.79, 4.24]}

According to the graph, ##csc0## is equal to undentified.

2) Trigonometric identities

According to trigonometric identities, ##cscx=1/sinx##

So, ##cscx=1/sinx## ##csc0=1/sin0## ##csc0=1/0## ##csc0## is equal to undentified.