The staircase has three parallelogram-shaped panels that are the same size. The horizontal distance between each panel is 4.25 i
1 answer:
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Answer: 63°
<u>Step-by-step explanation:</u>
Since BD is the diameter, then arc BCD = 180°
Given that arc BC = 54°, then arc CD = 180° - 54° = 126°
∠DBC is an intercepted angle -> DBC = half of arc CD
