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[" 32.What is the acute angle between th...

[" 32.What is the acute angle between the lines "Ax+By=A+B" and "],[A(x-y)+B(x+y)=2B?],[[" (a) "45^(@)," (b) "tan^(-1)((A)/(sqrt(A^(2)+B^(2))))],[" (c) "tan^(-1)((B)/(sqrt(A^(2)+B^(2))))," (d) "60^(@)]]

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