Question

How do you evaluate the expression `csc(180)`?

Answer 1

Recall that `cscx = 1/sinx`.

Explanation:

`= 1/sin(180)`

Using the unit circle, we find that `sin180˚ = 0`

Hence, `csc(180˚) = 1/(sin180˚) = 1/0 = O/`

This expression is undefined!

Hopefully this helps!