engineering recuitment ICAR (IARI) Assistant (Pre + Mains) 2022 Mock Test Quantitative Aptitude Geometry Quadrilaterals
A cyclic-quadrilateral ABCD is inscribed in a circle with AB as diameter and centre at O. The side BC and AD are extended to meet at the point P. If an equilateral triangle is drawn inside the cyclic quadrilateral with the base as CD and vertex opposite to the base is at point O, then find the ∠APB.
1
30∘
2
90∘
3
10∘
4
60∘