# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2003 | Oct-Nov | (P1-9709/01) | Q#7

Hits: 646 Question The diagram shows a triangular prism with a horizontal rectangular base , where units and units. The vertical ends and are isosceles triangles with units. The mid-points of and are and respectively. The origin is at the mid-point of . Unit vectors , and are parallel to , and respectively. i. Find the length of OB. […]