14. If the pair of lines given by (x2 + y2 )sin’a =(x Cos a- y Sina)


14. If the pair of lines given by
(x2 + y2 )sin’a =(x Cos a- y Sina) areperpendicular to each other then a =TT1) 2) 0 3)24377A)wla23.​


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