The angle of y in the triangle is 30 degrees.
How to find angles in a triangle?
∠O = 180 - 30 - 70 (angles in a triangle)
∠O = 180 - 100(angles in a triangle)
∠O = 80°
Using vertically opposite angle principle and sum of angle in a triangle,
80 + y + 70 = 180
180 - 150 = y
y = 30 degrees
learn more on angles here: https://brainly.com/question/17738167
#SPJ1
