Please help me with the math question!  TIA  ?

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  • Pope
    Lv 7
    2 months ago

    If that is a circle with center O, then ∠AOB is the central angle of arc ACB.

    ∠AOB = arc ACB = 60°

    Radii OA and OB are equal, so the opposite angles in ∆AOB are equal.

    ∠BAO = ∠ABO

    ∠BAO + ∠ABO + ∠AOB = 180°

    ∠BAO + ∠ABO + 60° = 180°

    ∠BAO + ∠ABO = 120°

    ∠BAO + ∠BAO = 120°

    ∠BAO = 60°

  • Anonymous
    2 months ago

    Something is wrong with the question. "Arc ACB" means a distance (arc length), not an angle.  So you can't say it equals 60degrees.

    And in any case, angle ACB is shown over 90degrees and can't possibly be 60degrees.

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