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[" Q.2To remove xy term from the second ...

[" Q.2To remove xy term from the second degree equation "5x^(2)+8xy+5y^(2)+3x+2],[" coordinates axes are rotated through an angle "theta" ,then "theta" equals."],[[" (A) "pi/2," (B) "pi/4," (C) "3 pi/8," (D) "pi/8]]

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