| Exam Board | CAIE |
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| Module | P1 (Pure Mathematics 1) |
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| Year | 2023 |
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| Session | November |
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| Topic | Reciprocal Trig & Identities |
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2 Find the exact solution of the equation
$$\frac { 1 } { 6 } \pi + \tan ^ { - 1 } ( 4 x ) = - \cos ^ { - 1 } \left( \frac { 1 } { 2 } \sqrt { 3 } \right)$$