Question

In the figure, BOA is a line, find the value of x​

Answer 1

Answer:

x=10degrees.Hope it helps you.

Answer 2

We know that Sum of all angles on straight line is 180°. This is all known as linear pair.

So,

⇒2x° + 2x + 30° + x = 180° ( linear pair)

⇒ 5x + 30° = 180°

⇒ 5x = 180° - 30° = 150°

⇒x= 180°/2

⇒x = 30°

Verification:-

So,

⇒2x° + 2x + 30° + x = 180°

⇒ (2×30) + ( 2 × 30° + 30°) + 30° = 180°

⇒ 60° + 90° + 30° = 180°

⇒180°= 180°

Hence value of x is 30 °