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A , B and C are three points on a circ...

`A , B and C` are three points on a circle such that the angles subtended by the chords `AB` and `AC` at the centre `O` are `90^@`a n d `110^@`, respectively. Determine `/_BAC`

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`angleAOB=110^*` and `angleAOC=130^*`
As we know that,
`angleAOB+angleAOC+angleBOC=360^*`
`angleBOC=360^*-110^*-130^*`
`angleBOC=120^*`
So, `angleBAC=angleBOC/2`
`angleBAC=120^*/2=60^*`
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