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Proposition: Pythagorean Identity
The following formula holds for all real numbers \(x\in\mathbb R\):
\[\cos^2(x)+\sin^2(x)=1.\]
Table of Contents
Proofs: 1
Mentioned in:
Examples: 1
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References
Bibliography
- Forster Otto: "Analysis 1, Differential- und Integralrechnung einer Veränderlichen", Vieweg Studium, 1983
