One of the equal angles of an isosceles triangle is 50°. Find all the angles of this triangle.

Let the third angle be x°.

x + 50° + 50° = 180°

⇒ x° + 100° = 180°

⇒ x° = 180° – 100° = 80°

Thus ∠x = 80°

In given ΔABC, ∠C = 110°