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22-08-2018
Mathematics

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I need Help With Question 3 Thank You

I need Help With Question 3 Thank You class=

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26-08-2018

Central angle is twice an inscribed angle subtended by the same arc.

Therefore ∠CAB = 2∠CDB.

∠CAB = 45° → ∠CDB = 45° : 2 = 22.5°

Answer: C.

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