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[" 5.If "(sin^(2)x-2cos^(2)x+1)/(sin^(2)...

[" 5.If "(sin^(2)x-2cos^(2)x+1)/(sin^(2)x+2cos^(2)x-1)=4" then the value of "2tan^(2)x" is "],[[" (a) "3," (b) "4],[" (c) "5," (d) "6]]

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