Edexcel C2 2008 June — Question 9

Exam BoardEdexcel
ModuleC2 (Core Mathematics 2)
Year2008
SessionJune
TopicTrig Equations
9. Solve, for \(0 \leqslant x < 360 ^ { \circ }\),
  1. \(\quad \sin \left( x - 20 ^ { \circ } \right) = \frac { 1 } { \sqrt { 2 } }\)
  2. \(\cos 3 x = - \frac { 1 } { 2 }\)
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