Answer :

As we know that

__Sum of Opposite angles of cyclic quadrilateral are supplementary__

If the opposite angles are ∠A&∠C ; ∠B&∠D

⇒ ∠A + ∠C = 180°

∠A = 180°-105° = 75°

⇒ ∠B + ∠D = 180°

∠ B = 180°-85° = 95°

__∴____∠____A and____∠____B are 75____°____and____95°__

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