| Exam Board | AQA |
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| Module | AS Paper 2 (AS Paper 2) |
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| Year | 2024 |
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| Session | June |
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| Topic | Trig Graphs & Exact Values |
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2 One of the equations below is true for all values of \(x\)
Identify the correct equation.
Tick \(( \checkmark )\) one box.
\(\cos ^ { 2 } x = - 1 - \sin ^ { 2 } x\) □
\(\cos ^ { 2 } x = - 1 + \sin ^ { 2 } x\)
\includegraphics[max width=\textwidth, alt={}, center]{f5e0d980-4c50-4735-aea7-1bdf448a58f7-02_113_113_1658_790}
\(\cos ^ { 2 } x = 1 - \sin ^ { 2 } x\)
\includegraphics[max width=\textwidth, alt={}, center]{f5e0d980-4c50-4735-aea7-1bdf448a58f7-02_113_113_1813_790}
\(\cos ^ { 2 } x = 1 + \sin ^ { 2 } x\) □