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The positional relationship between xcos θ + ysin θ + a = 0 and xcos θ - ysin θ + B = 0
A. Parallel B. vertical C. oblique D. related to the value of a, B, θ D
The positional relationship between xcos θ + ysin θ + a = 0 and xcos θ - ysin θ + B = 0
A. Parallel B. vertical C. oblique D. related to the value of a, B, θ D
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