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(i) In Figure (1) , O is the centre of t...

(i) In Figure (1) , O is the centre of the circle . If `/_ OAB = 40^(@)` and `/_OCB = 30^(@)` , find `/_ AOC `.
(ii) In figure, (2) , A,B and C are three points on the circle with centre O such that `/_AOB = 90^(@)` and `/_ AOC = 110^(@)`. Find `/_BAC`.

Text Solution

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The correct Answer is:
(i) `/_ AOC = 140^(@)` (ii) `/_ BAC = 180^(@)`
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Knowledge Check

  • In the given figure, , O is the centre of a circle and /_ AOB = 140^(@) . Then , /_ ACB = ?

    A
    `70^(@)`
    B
    `80^(@)`
    C
    `110^(@)`
    D
    `40^(@)`

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