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[sin(2tan^(-1)(1)/(3))+cos(tan^(-1)2sqrt...

[sin(2tan^(-1)(1)/(3))+cos(tan^(-1)2sqrt(2))" equals "],[[" (A) "(13)/(14)," (B) "(15)/(14)," (C) "(14)/(15)," (D) "(12)/(15)]]

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