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Lindsey Mcfarlane
08/08/2023 · Primary School

Prove that: 1) \( 4 \arctan \frac{1}{5}-\arctan \frac{1}{239}=\frac{\pi}{4} \)

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The proof involves using the tangent addition formula and properties of the arctangent function to show that \( 4 \arctan \frac{1}{5} - \arctan \frac{1}{239} = \frac{\pi}{4} \).

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