In the diagram, what is the value of $y$?
https://latex.artofproblemsolving.com/2/b/8/2b8ece06cd410a72e32cb7e92073374f4b987744.png
The missing angle in the left triangle has value 40o.
Therefore, its vertical angle in the right triangle is also 40o.
This leaves 50o for the missing angle.
the link kind of dosn't work, tried to open it but only showed black, i waited but nothing so i cant help you srry but 50 degrees may be right