OX and OV to D It is 11. X is the mid-point of OD, subti Y lies on CD such that d CY =}CD; OC = c, X OD = d. Exar Z Dra (2) O (b) (a) Express CD. CY and OY in terms of c and d. (b) Express CX in terms of c and d. (c) Given that CZ = hCX, express OZ in terms a of c, d and h. (d) If OZ = KOY, form an equation and hence find the values of h and k