vikas askiitian expert
Last Activity: 14 Years ago
y-ca-dB = r =(5-c+d)i -(2d+c)k -2(8+2c-3d)k
since this vector is perpendicular to a & B
so r.B=0 & r.a=0
now u will have 2 equations with two variables c & d
solve these equations and get your ans...