Periodic nature - PowerPoint PPT Presentation

7.3 The Sine and Cosine Functions

7.3 The Sine and Cosine Functions. Objective To use the definitions of sine and cosine to find values of these functions and to solve simple trigonometric equations . The Definition of Sine and Cosine Functions. Suppose an acute angle A is drawn in

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Classical Techniques: Substitution

Classical Techniques: Substitution. Substitute a character, digit or symbol for each character in the plaintext Discussed: The Caesar cipher Monoalphabetic cipher Playfair cipher Polyalphabetic cipher. Caesar Cipher. 2000 years ago, by Julius Caesar

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Classical Techniques: Substitution

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