AQA C2 2012 January — Question 8

Exam BoardAQA
ModuleC2 (Core Mathematics 2)
Year2012
SessionJanuary
TopicTrig Equations

8
  1. Given that \(2 \sin \theta = 7 \cos \theta\), find the value of \(\tan \theta\).
    1. Use an appropriate identity to show that the equation $$6 \sin ^ { 2 } x = 4 + \cos x$$ can be written as $$6 \cos ^ { 2 } x + \cos x - 2 = 0$$
    2. Hence solve the equation \(6 \sin ^ { 2 } x = 4 + \cos x\) in the interval \(0 ^ { \circ } < x < 360 ^ { \circ }\), giving your answers to the nearest degree.