Advertisements
Advertisements
प्रश्न
In the given figure, a = 40°. The value of b is ______.
पर्याय
20°
24°
36°
120°
उत्तर
In the given figure, a = 40°. The value of b is 20°.
Explanation:
From the given figure it is clear that,
2a + 5b = 180°
⇒ 2 × 40° + 5b = 180° ......[Linear pair]
⇒ 80° + 5b = 180° ......[∵ a = 40°]
⇒ 5b = 180° – 80
⇒ 5b = 100°
⇒ b = `100^circ/5`
∴ b = 20°
APPEARS IN
संबंधित प्रश्न
Angles between South and West and South and East are ______.
In the given figure, ∠ROS is a right angle and ∠POR and ∠QOS are in the ratio 1:5. Then, ∠QOS measures ______.
In the given figure, POQ is a line, then a is ______.
Two angles making a linear pair are always supplementary.
A linear pair may have two acute angles.
In the following figure, write, if any, (i) each pair of vertically opposite angles, and (ii) each linear pair.
What is the type of other angle of a linear pair if one of its angles is obtuse?
