Question

In the adjoining figure, find the value of a and b if a : b = 7:5.​

Answer 1

Answer:

n given figure 3y+y=180 degree  

it means y=180/4=45degree  

y+3y+3y+a=360 degree

7*45+a =360

315+a=360

⇒ a=45°

Step-by-step explanation: