Edexcel C2 2005 June — Question 5

Exam BoardEdexcel
ModuleC2 (Core Mathematics 2)
Year2005
SessionJune
TopicTrig Equations
5. Solve, for \(0 \leqslant x \leqslant 180 ^ { \circ }\), the equation
  1. \(\quad \sin \left( x + 10 ^ { \circ } \right) = \frac { \sqrt { } 3 } { 2 }\),
  2. \(\cos 2 x = - 0.9\), giving your answers to 1 decimal place.
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