In the adjoining figure, AOB is a straight line. Find the value of x. Hence, Find And
X=27.5, =77.5°
=47.5°
AOB is a straight line
Therefore, + ∠COD +
= 180°
⇒ (3x - 5)° + 55° + (x + 20)° = 180°
⇒ 3x - 5° + 55° + x + 20° = 180°
⇒ 4x = 180° - 70°
⇒ 4x = 110°
⇒ x = 27.5°
= (3x - 5)°
= 3×27.5 – 5 = 77.5°
= (x + 20)°
= 27.5 + 20 = 47.5°