state gov Allahabad High Court Group D Mock Test Series 2024 Quantitative Aptitude Geometry Quadrilaterals
PQRS is a square with its diagonals meeting at O. A and B are two points on RS such that RO = RA and SO = SB. If ∠AOB = θ, find the value of cos θ?
1
\(\sqrt3\over2\)
2
\(1\over\sqrt2\)
3
1
4
\(1\over2\)