Calculate: (I) ∠Cdb, (Ii) ∠Abc, (Iii) ∠Acb - ICSE Class 10 - Mathematics
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(i) ∠CDB, (ii) ∠ABC, (iii) ∠ACB
∠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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Solution Calculate: (I) ∠Cdb, (Ii) ∠Abc, (Iii) ∠Acb Concept: Chord Properties - Chords Equidistant from the Center Are Equal (Without Proof).