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[" If "cos(A-B)=(3)/(5)" and "tan A" tan...

[" If "cos(A-B)=(3)/(5)" and "tan A" tanB "=2," then which one of the following is true? IEAMCET 20077,"],[[" (1) "sin(A+B)=(1)/(5),2" ) "sin(A+B)=-(1)/(5)," 3) "cos(A-B)=(1)/(5),4)cos(A+B)=-(1)/(5)]]

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