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3.4 Trigonometry (A-level only)

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Question 10
40%

Solve, for −180≤x≤180-180 \leq x \leq 180−180≤x≤180, the equation,

2cot⁡2x−cosec2x−cosecx=4 2\cot^2x - \text{cosec}^2x - \text{cosec}x = 4 2cot2x−cosec2x−cosecx=4

Give your answers to 1 decimal place where appropriate.

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3.4 Trigonometry (A-level only) Questions

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