Question

the sum of 2 angles of a triangle is 80° and their difference is 20°.find all the angles in the triangle


pls help me wid this problem​

Answer 1

Answer:

one angle is 100.other two are 50 and 30

Step-by-step explanation:

let 1st angle is A and 2nd angle is B

A+B=80

A-B=20

SO, A=50

B=30

AND HENCE 3RD ANGLE=180-80=100

Answer 2

Step-by-step explanation:

Let the 1sr angle be x

And 2nd angle be y

Sum of both angles=80

Difference of both angles=20

X= 80-y

x-y =20

80-y-y=20

80-2y=20

-2y=20-80

-2y= -60

Both side (-) sign will be cancelled

2y=60

y=60/2

y=30

x=80-30

=50

Sum of all angles of triangles are 180°

Let the third angle be z

30°+50°+z =180°

z=180°-80°

Z=100°

Answer: 30°,50° and 100°