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1. Copyrights 2013 By Lê Văn Huynh Phöông phaùp giaûi phöông trình löôïng…

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WARM-UP Prove: sin2 x + cos2 x = 1 This is one of 3 Pythagorean Identities that we will be using in Ch. 11. The other 2 are: 11.1 - Basic Trigonometry Identities Objective:…