Question

in the given figure find x​

Answer 1

x+10+x+20+x=180
3x+30=180
3x=180-30
3x=150
x=150÷3
x=50
so that
x=50
x+10= 50 +10=60
x+20=50+20=70
hope this helps u

Answer 2

Given: ∠DOA = x + 10°, ∠DOC = x° and ∠COB = x + 20°.

To find: The value of x.

Answer:

∠DOA + ∠DOC + ∠COB = 180° (Linear pair)

That is,

x + 10 + x + x + 20 = 180°

3x + 30 = 180°

3x = 180° - 30

3x = 150°

x = 150°/3

x = 50°

Therefore, ∠DOA = 50 + 10 = 60°, ∠DOC = 50° and ∠COB = 50 + 20 = 70°.