Question

13. In Fig. 10.40,a is greater than b by one third of a right-angle. Find the values of a and b
​

Answer 1

Step-by-step explanation:

1/3×90 = 30

a+b = 180( linear pair)

given: a= b+ 30

substitute in the equation

b+30 + b = 180

2b +30 = 180

2b = 150

b= 75 degrees

a= 105 degrees