The angles of a triangle are (x-40)°, (x-20)° and. Find the value of x.
Given that,
The angles of the triangle are (x – 40o), (x – 20o) and ( – 10o)
We know that,
Sum of all angles of triangle is 180o.
Therefore,
x – 40o + x – 20o + – 10o = 180o
2x + – 70o = 180o
= 250o
5x = 250o * 2
5x = 500o
x = 100o
Therefore, x = 100o