ICSE BoardEnglish MediumSTD 10MathematicsCircles3 Marks
Question
Calculate: (i) ∠CDB, (ii) ∠ABC, (iii) ∠ACB
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Answer
Here, ∠CDB = ∠BAC = 49° ∠ABC =∠ADC = 43° (Angle subtend by the same chord on the circle are equal) By angle – sum property of a triangle, ∠ACB = 180°- 49° -43°= 88°
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