Question

Find the value of x and y

Answer 1

Just a guess, but the angle inside the triangle that's not x or y is the remaining angle after subtracting the 30 degrees shown.  That makes the non labeled angle inside the triangle 150 degrees.  since all triangles are 180 degrees, this means x and y add up to 30.  They look roughly the same, so i'd guess they're both 15 degrees.