Question

find the value of B???! ​

Answer 1

Answer:

As we know that the sum of angle of triangle is 360

so Angle A is 180-120=60

Angle C is 180-100=80

So Angle B is

angle A + angle B + angle C = 360

60 + 80 + B = 360

140 +B =360

So angle B is 220 .....

$<marquee>hope it helps ❤</marquee>$

Answer 2

Answer:

Angle BAC+ Angle CAO = 180°(Angle in a straight line)

Angle BAC = 180°-120°=60°

Now,

Angle XCA+Angle ACB = 180°(Angle in a straight line)

Angle ACB= 180°-100°=80°

Now,in ∆ABC

Angle A + Angle B + Angle C= 180°(Angle sum property)

60°+80°+Angle C=180°

Angle C=180°-140°=40°