OCR MEI Paper 2 2024 June — Question 4

Exam BoardOCR MEI
ModulePaper 2 (Paper 2)
Year2024
SessionJune
TopicTrig Equations

4
  1. On the axes in the Printed Answer Booklet, sketch the graph of \(y = \sin 2 \theta\) for \(0 \leqslant \theta \leqslant 2 \pi\).
  2. Solve the equation \(\sin 2 \theta = - \frac { 1 } { 2 }\) for \(0 \leqslant \theta \leqslant 2 \pi\).
    \(5 M\) is the event that an A-level student selected at random studies mathematics.
    \(C\) is the event that an A-level student selected at random studies chemistry.
    You are given that \(\mathrm { P } ( M ) = 0.42 , \mathrm { P } ( C ) = 0.36\) and \(\mathrm { P } ( \mathrm { M }\) and \(\mathrm { C } ) = 0.24\). These probabilities are shown in the two-way table below.
    \cline { 2 - 4 } \multicolumn{1}{c|}{}\(M\)\(M ^ { \prime }\)Total
    \(C\)0.240.36
    \(C ^ { \prime }\)
    Total0.421