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Difference and Sum
Question | Answer |
---|---|
sin(α + β) | sin(α)cos(β) + cos(α)sin(β) |
sin(α – β) | sin(α)cos(β) – cos(α)sin(β) |
cos(α + β) | cos(α)cos(β) – sin(α)sin(β) |
cos(α – β) | cos(α)cos(β) + sin(α)sin(β) |
tan(α + β) | (tan(α) + tan(β))/ 1 - tan(α)tan(β) |
tan(α - β) | (tan(α) - tan(β))/ 1 + tan(α)tan(β) |