Question

In the figure,AB is a line. If a-2b=30 degree then find the values of a,b

Answer 1

Ab is the line

therefore angle a +angle b=180°. ---------(1)

angle a =30+2b. (given)

put the value in (1)

30+2b+b=180

30+3b=180

3b=150

b=50°

therefore a=30+2(30)

a=90°

hope this will help u