Question
Download Solution PDFகொடுக்கப்பட்ட படத்தில், ∠ABC = 81° மற்றும் ∠ACB = 9°. ∠BDC இன் மதிப்பு என்ன?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகொடுக்கப்பட்டது:
∠ABC = 81°
∠ACB = 9°
பயன்படுத்தப்பட்ட கருத்து:
சுற்றளவில் உள்ள கோணங்கள்
முக்கோணத்தின் உள் கோணங்களின் கூட்டுத்தொகை 180° ஆகும்.
கணக்கீடு:
△ ABC இல்
⇒ ∠ABC +∠ACB + ∠BAC = 180° (கோணத் தொகைபண்பு)
⇒ 81° + 9° + ∠BAC = 180°
⇒ ∠BAC = 180° - 90° = 90°
இப்போது,
⇒ ∠BAC = ∠BDC = 90° (அதே துண்டில் உள்ள கோணம்)
∴ சரியான பதில் ∠BDC = 90 ° .
Last updated on Jul 12, 2025
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