So, I am looking at a question and I'm having a hard time solving it.
So I know the formula but my question is first, what is $\alpha$ and what is $\beta$?
So I calculated some values:
I found $AC=CB=\sqrt{(1-(-1))^2+(1-0)^2}=\sqrt{5}$
and I found $AB=\sqrt{(0-1)^2+(2-1)^2}=\sqrt{2}$.
Let take $\csc{\alpha}$. Well i know $\csc{\alpha}$ is the same as $\frac{1}{\sin(\alpha)}$
but the truth is, I really do not know to understand this question since I do not know what $\alpha$ and what is $\beta$?
If anyone can help me, I think I can progress from there.