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General Solutions of Some Standard Equations

sin θ = sin α θ = nπ +(–1)n, n I, n Z
 
cos θ = cos α θ = 2nπ ± α, n Z
 
tan θ = tan α θ = nπ + α, n Z
 
cos2 θ = cos2 α θ = nπ ± α, n Z
 
tan2 θ = tan2 α θ = nπ ± α, n Z




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