Question

please draw the triangle also ​

Answer 1

Answer:

120°

Step-by-step explanation:

Given,

in triangleABC, AB=AC and B=30°

so ,B=C=30°

(as AB=AC)

So,A+B+C=180°

(angle sum property)

30°+30°+A=180°

A=180°-60°=120°

ans:120°

Answer 2

Step-by-step explanation:

first we write b= 30

then we write Angle a+b+c = 180 (triangle sum property)

b=30

let angle a be x and angle c be 2x

30+x+2x = 180

30 + 3x = 180

3x= 180-30

3x=150

x= 150÷3

x=50

2x =2×50

2x= 100

So, angle a=50 and angle c=100