Ifx = rcos6, y = rsine then+ y2 = (a) 0 (b) 1 (c) sin6 (d) cos6 o o (b) o d) expansion of flx,y) = tan upto first degree containing (x+1) and (y-1) is (a)-x-1y-

Ifx = rcos6, y = rsine then+ y2 = (a) 0 (b) 1 (c) sin6 (d) cos6 O O (b) O d) Expansion of flx,y) = tan upto first degree containing (x+1) and (y-1) is (a)-x-1y-1-1*+1) +10-1)2 a4 2 1! 2 1! 2 2! 2 2! (b)-*1-1 4 1**1 19-1 42 1! 2 1! 4 21 4 21 l-1y-1_ 1a*1) 4 10-1) (C) 2 1 2 1! 4 2 4 2 (d) 3_1**11y-1 1 (x+1) 1(y-1)2 42 1! 2 1 4 2 4 2 Oa Ob Oc O d