Question

The angles of a triangle are in AP then measure of one of the angles is ...................

Answer 1

Answer:

Let, the angles in AP be;

∠a₁=(a–d)

∠a₂=(a)

∠a₃=(a+d)

according to angles sum property of a ∆

a₁+a₂+a₃=180°

a–d+a+a+d=180°

3a=180°

a=60°

So, one of the angle of ∆ is 60°.

so,

the sum of the other two angles is 120°.