OCR H240/01 2019 June — Question 2

Exam BoardOCR
ModuleH240/01 (Pure Mathematics)
Year2019
SessionJune
TopicVectors Introduction & 2D

2 The point \(A\) is such that the magnitude of \(\overrightarrow { O A }\) is 8 and the direction of \(\overrightarrow { O A }\) is \(240 ^ { \circ }\).
    1. Show the point \(A\) on the axes provided in the Printed Answer Booklet.
    2. Find the position vector of point \(A\). Give your answer in terms of \(\mathbf { i }\) and \(\mathbf { j }\). The point \(B\) has position vector \(6 \mathbf { i }\).
  1. Find the exact area of triangle \(A O B\). The point \(C\) is such that \(O A B C\) is a parallelogram.
  2. Find the position vector of \(C\). Give your answer in terms of \(\mathbf { i }\) and \(\mathbf { j }\).