Question
Download Solution PDFఇచ్చిన చిత్రంలో, ∠ABC = 81° మరియు ∠ACB = 9°. ∠BDC విలువ ఎంత?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFఇచ్చిన సమాచారం:
∠ABC = 81°
∠ACB = 9°
ఉపయోగించిన పద్దతి:
అదే ఆర్క్ ద్వారా ఉపబలంగా చుట్టుకొలత వద్ద కోణాలు సమానంగా ఉంటాయి.
త్రిభుజం లోపలి కోణాల మొత్తం 180°.
సాధన:
△ ABCలో
⇒ ∠ABC +∠ACB + ∠BAC = 180° (కోణం మొత్తం విలువ)
⇒ 81° + 9° + ∠BAC = 180°
⇒ ∠BAC = 180° - 90° = 90°
ఇప్పుడు,
⇒ ∠BAC = ∠BDC = 90° (ఒకే విభాగంలో కోణం)
∴ సరైన సమాధానం ∠BDC = 90°.
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