Question

The sum of 2 angles of a triangle is 120 degrees and their difference is 20 degrees . find all three angles of the triangle

Answer 1

Answer:

70 , 60 , 50

Step-by-step explanation:

let angles be a,b,c

given

angle a + angle b= 120

angle a - angle b= 20

solving these two we get

a= 70

b=50

now using property of triangle sum of angles of triangle is 180 we get

third angle c= 60

Answer 2

Step-by-step explanation:

sum of all anglea in a triangle is 180degress

120-180=60degrees

so third angle os 60 degrees

now 50degree and 70 degree are other two angles

70-50=20degrees

so a=50

b=70

c=60

a+b+c=180

50+70+60=180