Question

8.
In Fig, POQ is a line. If x = 30°, then 2 QOR is
S
30
(a) 80°
(b) 45°
(c) 75
(d) 90°​

Answer 1

Answer:

(a) 90o Sum of all angle about a straight line given in the figure are equal to 180o. Then, 30o + 2y + 3y = 180o 30o + 5y = 180o 5y = 180o – 30o 5y = 150o y = 150/5 y = 30o So, 2y = 2 × 30 = 60o 3y = 3 × 30 = 90o Therefore, ∠ QOR = 90°