Question

O is the centre of a circle and arc bcd subtends an angle of 140 at the centre O. Then the measure of ∠BCD is
a) 80 b) 160 c) 110 d) 120

Answer 1

Answer:

As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star's appearance to wobble or twinkle.

Answer 2

Step-by-step explanation:

c)110°

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