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⌨ Keyboard: numbers · + − * / · Enter = · Backspace · Escape (AC) · ( ) · . · p = π · e key

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Use the calculator to verify Euler's identity: e^(iπ) + 1 = 0. Start by computing e^π ≈ 23.14. Then explore: what is sin(π)? What is cos(0)? Try tan(45°) and confirm it equals exactly 1.

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