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6.4.3 sum and difference formulas
6.4.3 sum and difference formulas
6.4.3 sum and difference formulas
6.4.3 sum and difference formulas
6.4.3 sum and difference formulas
6.4.3 sum and difference formulas
6.4.3 sum and difference formulas
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6.4.3 sum and difference formulas

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  • 1. Establish Identities Find Exact value of Expressions
  • 2. Establish the identity  2cos sin     2 2cos cos sin sin        0 cos 1 sin   sin sin   
  • 3. Establish the identity  sin sin    sin cos cos sin        0 cos 1 sin    sin sin 
  • 4. Establish the identity     2 2 sin sin sin sin           sin cos cos sin sin cos cos sin          2 2 2 2 sin cos cos sin        2 2 2 2 sin 1 sin 1 sin sin        2 2 2 2 2 2 sin sin sin sin sin sin         2 2 2 2 sin sin sin sin     
  • 5. Find the exact value of the expression  1 13 12 5 5sin sin tan   1 3 5sin    1 12 5tan     3 5 4 12 5 13  sin   sin cos cos sin          3 5 4 12 5 13 5 13   15 48 65 65   33 65
  • 6. Find the exact value of the expression  1 1 54 5 12cos sin tan    1 4 5sin   1 5 12tan     45 3  5 12 13  cos   cos cos sin sin          3 512 4 5 13 5 13   36 20 65 65  16 65
  • 7. p. 482 # 39, 42, 45, 50, 51, 53, 62, 65 - 72

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