Question

the sum of two angles of triangle is 80 degree and their difference is 20 degree find all the angles of triangle​

Answer 1

Let a,b,c be the angles of triangle

Given a+b=80&a-b=20

Add both

(a+b)+(a-b)=80+20

2a=100

a=50

b=80-50=30

c=180-(50+30)=180-80

=100

Angles of the triangle are 100,50&30

Answer 2

Answer:

Step-by-step explanation:

x+y=80  

x=y+20  

x=80-y  

20+y=80-y  

2y=60  

y=30  

x+30=80  

x=50  

80+z=180  

z=100  

Angles:  

x=50  

y=30  

z=100