| Exam Board | CAIE |
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| Module | P3 (Pure Mathematics 3) |
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| Year | 2010 |
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| Session | June |
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| Topic | Addition & Double Angle Formulae |
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3 Solve the equation
$$\tan \left( 45 ^ { \circ } - x \right) = 2 \tan x$$
giving all solutions in the interval \(0 ^ { \circ } < x < 180 ^ { \circ }\).