Question

The angles of a triangle are in AP the least being one third the greatest. find the angle.​

Answer 1

Answer:

Let the angles be a-d,a,a+d

according to the question a+d = 2(a-d)

a-d+a+a+d = 180 (since sum of the angles are 180 degrees )

= 3a = 180

= a = 60

from second equation 3d = 60

d = 20

so the angles are 40 60 and 80