मान लीजिये sin (A+B) तथा sin(A-B)=1/2...

मान लीजिये `sin (A+B)` तथा ` sin(A-B)=1/2`, जहाँ ` A,B in [ 0,pi/2]` तब
` tan (A+2B)* tan(2A+B)` किसके बराबर है ?

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