Circle | geometry | circles class 9 | class 10 | competitive exams |
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- เผยแพร่เมื่อ 17 พ.ค. 2024
- class 9
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Join AC
Triangle AOC
AO=CO(radii)
Angle ACO=angle BAC
Angle BAC=angle x (circum angle on same arc)
ang BAC + ang ACO=180-140=40
BAC=20
Hence angle x =20 degrees