If in \[\Delta ABC,\]\[a=6,b=3\]and \[\cos (A-B)=\frac{4}{5}\], then its area will be [MP PET 2004]

If in \[\Delta ABC,\]\[a=6,b=3\]and \[\cos (A-B)=\frac{4}{5}\], then i

1.	If in \[\Delta ABC,\]\[a=6,b=3\]and \[\cos (A-B)=\frac{4}{5}\], then its area will be [MP PET 2004]
A.	7 square unit
B.	8 square unit
C.	9 square unit
D.	None of these
Answer» D. None of these

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If in \[\Delta ABC,\]\[a=6,b=3\]and \[\cos (A-B)=\frac{4}{5}\], then its area will be [MP PET 2004]

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