This problem appeared in a remedial math class from my college last week. Someone I know, who attended the class, sent me this problem claiming that it was the toughest problem on the test. I'm sharing this problem here to see if there are any solutions that can be simpler than mine, which I'll also post.

Edit: While I'm aware of a similar question already having been asked. The issue is that it is a general case, unlike this version of the problem, and thus lacks a Euclidean geometrical approach as I have demonstrated in my answer.

[![enter image description here](https://i.stack.imgur.com/Z5ir0.png)](https://i.stack.imgur.com/Z5ir0.png)