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The bisectors of the angles ABC and BCA ...

The bisectors of the angles ABC and BCA of a triangle ABC meet in a point 0. What is the angle at O facing the side BC ?

A

`90^(@) - (A//2)`

B

`90^(@) + (A//2)`

C

`90^(@) - A`

D

`90^(@) + A`

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Knowledge Check

  • The internal bisectors of angle B and angle C of triangle ABC meet at O. If angle A=80^@ then angle BOC is :

    A
    `50^@`
    B
    `160^@`
    C
    `100^@`
    D
    `130^@`

  • In a Delta ABC, the internal angle bisector of angle ABC and angle ACB meets at point ‘O’. If the angle BOC is 134^@ , then find angle BAC.

    A
    a) `76^@`
    B
    b) `84^@`
    C
    c) `92^@`
    D
    d) `88^@`

  • Internal bisectors of angles /_B and /_C of a triangle ABC meet at O. If /_BAC = 80^@ , then the value of /_BOC is

    A
    `120^@`
    B
    `140^@`
    C
    `110^@`
    D
    `130^@`

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