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Calculate: ∠CDB, ∠ABC, ∠ACB. - Mathematics

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Question

Calculate:

  1. ∠CDB,
  2. ∠ABC,
  3. ∠ACB.

Sum

Solution


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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Chapter 17: Circles - Exercise 17 (A) [Page 258]

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Selina Mathematics [English] Class 10 ICSE
Chapter 17 Circles
Exercise 17 (A) | Q 9 | Page 258

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