[" 11.Let "vec a=2i+j+k,vec b=i+2j-k" and a unit vector "vec c" be coplanar.If "c" is perpendicular to "a" ,then "],[vec c" is "quad 1quad " c."(1)/(-(i-2j))quad " d."(1)/(sqrt(3))(i-j-k)]

If vec a = 2i+j+k, vec b = i + 2j-k and a unit vector vec c be coplanar. If vec c is perpendicular to a vec a then vec c =

Let vec a=2i+j+k,vec b=i+2j-k and a unit vector vec c be coplanar.If vec c is perpendicular to vec a, then vec c is (1)/(sqrt(2))(-j+k) b.(1)/(sqrt(3))(-i-j-k)quad c.(1)/(sqrt(5))(-k-2j)d(1)/(sqrt(3))(i-j-k)

Let vec a=2i+j+k , vec b=i+2j-k and a unit vector vec c be coplanar. If vec c is perpendicular to vec a , then vec c is 1/(sqrt(2))(-j+k) b. 1/(sqrt(3))(-i-j-k)"" c. 1/(sqrt(5))(-k-2j) d. 1/(sqrt(3))(i-j-k)

Let vec a=2 hati+hat j+ hat k , vec b=hat i+2hat j- hatk and a unit vector vec c be coplanar. If vec c is perpendicular to vec a , then vec c is a. 1/(sqrt(2))(-hat j+hat k) b. 1/(sqrt(3))(-hat i-hat j-hat k)"" c. 1/(sqrt(5))(-hat k-2 hat j) d. 1/(sqrt(3))(hat i-hat j- hat k)

Let vec a=2 hati+hat j+ hat k , vec b=hat i+2hat j- hatk and a unit vector vec c be coplanar. If vec c is perpendicular to vec a , then vec c is a. 1/(sqrt(2))(-hat j+hat k) b. 1/(sqrt(3))(-hat i-hat j-hat k)"" c. 1/(sqrt(5))(-hat k-2 hat j) d. 1/(sqrt(3))(hat i-hat j- hat k)

Let vec a=2hat i+hat j+hat k,hat b=hat i+2hat j-hat k and a unit vector vec c be coplanar.If vec c is perpendicular to vec a then vec c=+-(1)/(sqrt(2))(-hat j+hat k)( b) (1)/(sqrt(3))(-hat i-hat j-hat k)(1)/(sqrt(5))(hat o-2hat j)(d)(1)/(sqrt(3))(hat i-hat j-hat k)

If vec a = -i +j +k, vec b = i-j+k , then a unit vector perpendicular to vec a and vec b is

If vec a = i + 2j+3k, vec b = i-2j+k, vec c = 4i+3j-2k and vec a + lambda vec b is perpendicular to vec c then lambda =