Question

in the given figure aob is a straight line. find the measure of 3a + b ​

Answer 1

Answer:

90 degree

Step-by-step explanation:

aob is a straight line

implies a + 2b + 2a - b + 90 = 180

implies. 3a +b = 90

Answer 2

Answer:

90

Step-by-step explanation:

here

1. angles AOD + DOC + COB = 180 sibce AOB is a straight line

and angle AOD = a+2b

angle DOC = 90

and angle COB = 2a-b

putting these values in 1. we get

(a+2b) + 90 + (2a-b) = 180

=> (a+2a) + (2b-b) = 180-90

=> ( 3a+b ) = 90 ANSWER