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Two variable chords AB and BC of a circl...

Two variable chords AB and BC of a circle `x^(2)+y^(2)=a^(2)` are such that AB=BC=a, M and N are the mid-points of AB and BC respectively such that line joining MN intersect the circle at P and Q where P is closer to AB and O is the centre of the circle.
`angleOAB` is

A

`30^(@)`

B

`60^(@)`

C

`45^(@)`

D

`15^(@)`

Text Solution

Verified by Experts

The correct Answer is:
2

From the figure, since `Delta OAB` is an equilateral triangle, `/_ OAB = 60^(@)`
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