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Trigonometric Functions

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1.Definition: Cosine of a Real Variable

2.Definition: Sine of a Real Variable

3.Definition: Tangent of a Real Variable

4.Proposition: Continuity of Cosine and Sine

5.Proposition: Pythagorean Identity

6.Proposition: Additivity Theorems of Cosine and Sine

7.Proposition: Infinite Series for Cosine and Sine

8.Proposition: Special Values for Real Sine, Real Cosine and Complex Exponential Function

9.Proposition: Inverse Cosine of a Real Variable

10.Proposition: Inverse Sine of a Real Variable

11.Proposition: Inverse Tangent of a Real Variable

Edit or AddNotationAxiomatic Method

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