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[" 6.If the quadratic equation "ax^(2)+b...

[" 6.If the quadratic equation "ax^(2)+bx+c=0(a>0)],[" has "sec^(2)theta" and "csc^(2)theta" as its roots,then "],[" (opcu "30" which of the following must hold good? "],[=x cos([30],[1])quad b+c=0],[[" (2"(3)" c>=4a "," (4) "4a+b>=0]]

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