Question

The angle of a triangle are x-10,x-20 and 1\2x-10.Find vale of x.

Answer 1

Question : The angle of a triangle are x-10,x-20 and 2x-10.Find vale of x.

Solution : Value of x is 55°

By Angle sum property, Sum of all angles in a triangle is 180°

( x - 10 ) + ( x - 20 ) + ( 2x - 10 ) = 180

⇒ 2x - 30 + 2x - 10 = 180

⇒ 4x - 40 = 180

⇒4x = 220

⇒x = 220/4

⇒ x = 55 .

Therefore , The value of x is 55°