Find the value of x in the following diagram.

We know that the sum of all the interior angles of a triangle is 180^o.

∴ In △ABC,

∠A + ∠B + ∠C = 180^o

⇒ x + 50^o + 60^o = 180^o

⇒ x + 110^o = 180^o

⇒ x = 180^o − 110^o

⇒ x= 70^o

Hence, the value of x is 70^o.