Plz solve it AC is an arc of circle with center 'O' subtends right angle at the centre of - Maths - Vector Algebra

Question

Plz solve it

AC is an arc of circle with center 'O' subtends right angle at the
centre of circle The point 'B' divides the arc AC in the ratio 1 :
2 If OA → = a →   and   OB → = b  
and   O C → = x a → + y b → then y
=
1) 2
2) 3
3) - 3
4) 2 3

Mrigendra Kumar Singh · Accepted Answer

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Plz solve it AC is an arc of circle with center 'O' subtends right angle at the centre of circle. The point 'B' divides the arc AC in the ratio 1 : 2. If OA → = a → and OB → = b and O C → = x a → + y b → then y = 1) 2 2) 3 3) - 3 4) 2 3

Plz solve it

AC is an arc of circle with center 'O' subtends right angle at the centre of circle. The point 'B' divides the arc AC in the ratio 1 : 2. If $\vec{OA} = \vec{a} and \vec{OB} = b and O \vec{C} = x \vec{a} + y \vec{b}$ then y =
1) 2
2) $\sqrt{3}$
3) $- \sqrt{3}$
4) $2 \sqrt{3}$