Question
Download Solution PDFপ্রদত্ত চিত্রে, PA এবং PB হল O কেন্দ্র বিশিষ্ট বৃত্তের স্পর্শক, এবং ∠APB = 54° হলে, ∠OBA = ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
PA এবং PB হল O কেন্দ্র বিশিষ্ট বৃত্তের স্পর্শক, এবং ∠APB = 54°
গণনা:
আমরা জানি যে ব্যাসার্ধ এবং স্পর্শক তাদের ছেদবিন্দুতে পরস্পর লম্ব হয়।
অতএব,
∠PAO = ∠PBO = 90°
সুতরাং,
∠AOB = 360 - 54 - 180
⇒ 126°
আবার, AO = OB = ব্যাসার্ধ
অতএব, ∠OAB = ∠OBA = 54/2
⇒ 27°
∴ নির্ণেয় উত্তর হল 27°
Last updated on Jul 19, 2025
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