Respuesta :

Here, 3x = 90  [ perpendicular ]
x = 90/3
x = 30

Now,2x + 3y = 90  [ Complimentary angle ]
Substitute the value of x, 
2(30) + 3y= 90
3y = 90 - 60
y = 30/3
y = 10

In short, Your Answer would be Option A

Hope this helps!