Question

in the following figure name the in fig, if a 40o.then wht is the value of the b

Answer 1

In the figure we see that 5b and 2a are linear angles

And a= 40°

5b+2a= 180°

5b+2*40°=180°

5b+ 80°=180°

5b=180°- 80°

5b=100°

b=100°/5

b=20°

Hope this answer will help u friends