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  1. O is the in-centre of the ∆ABC, if ∠BOC = 116°, then ∠BAC is
    1. 42°
    2. 62°
    3. 58°
    4. 52°
Correct Option: D

On the basis of given in question , we draw a figure triangle ABC in which O is the in-centre ,

The point of intersection of internal bisectors of a triangle is called in-centre.

∠BOC = 90° +
∠A
2

⇒ 116° = 90° +
∠A
2

∠A
= 116° - 90° = 26°
2

∴ ∠A = 26 × 2 = 52°



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