C-03-Q077mediumsingle_mcqIn △ABC\triangle ABC△ABC, BEBEBE and CFCFCF are perpendiculars on ACACAC and ABABAB respectively. Then △ABC△AEF=\dfrac{\triangle ABC}{\triangle AEF} =△AEF△ABC=aABAE\dfrac{AB}{AE}AEABbAB2AE2\dfrac{AB^2}{AE^2}