Question

In the given triangle , find the value of angle A.

PLS HELP ​

Answer 1

Answer:

60°

Step-by-step explanation:

triangle ABC having three angles

the submission of all the angles is 180°

the submission of angle 120 and angle b is 180

therefore, angle b=180-120

angle b=60°

similarly angle c=60°

now, by angle sum theorem of triangle

all the angles will be 60°

that means it is equilateral traingle

Answer 2

Answer:

Step-by-step explanation:

In a straight angle the degrees are 180° so, the 120°s is the figure are all exterior angles so the interior will be

180 - 120

= 60°

So now wee know that both angle b and c are 60°

Now for angle a:

In every triangle all the angles should add up to 180° So, all angle a,b and c should add to 180°

Since angle b and c are 60°

So

a = ( b + c ) - 180

a = (60 + 60) - 180

a = 180 - 120

a = 60°

Therefore

a = 60°

b = 60°

c = 60°

Confirmation:

a + b + c = 180

60 + 60 + 60

= 180

Hoping this helped

Sorry for delay