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# A4p By /VT UL} puiy usq) जा 0 रा भाप १० पद दा (§-o)ms* S _ (g +05s023 0s Y |
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Answer» cos(A+B)=4/5, thus tan(A+B)=3/4.sin(A-B)=5/13,thus tan(A-B)=5/12.then tan(2A)=tan((A+B)+(A-B))= (tan(A+B)+tan(A-B))/(1-tan(A+B)tan(A-B))= (3/4+5/12)/(1-(3/4)(5/12))= 56/33. |
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