Final answer:
In the given question, AB is perpendicular to AC and AB is parallel to CD. The values of x and y are respectively a) x = 28° and y = 75°.
Step-by-step explanation:
In the given question, we have AB perpendicular to AC and AB parallel to CD. We are given that angle CBD = 28° and angle BDE = 75°.
Since AB is perpendicular to AC, angle CBD + angle BDE must equal 90°. Therefore, x = 28°.
Since AB is parallel to CD, angle BDE must also equal angle ACD. Therefore, y = 75°.
So, the values of x and y are respectively x = 28° and y = 75°.