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The angle subtended by a chord at its ce...

The angle subtended by a chord at its centre is `60^@`, then the ra tio between chord and radius is

A

`1:2`

B

`1:1`

C

`sqrt2 :1`

D

`2:1`

Text Solution

Verified by Experts

The correct Answer is:
B
OA = OB
`implies angle OAB = angle OBA`
`implies angle OAB = (180^(@) - 60 ^(@))/(2)`
`implies angle OAB = 60^(@)`
अत: `Delta OAB` एक समबाहु `Delta` है।
`therefore OA = OB = AB`
`thereofre OA: AB =1 :1`
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