If a = I + 2j + 3k, b = -I + 2j + k, c = 3i + j and d is normal to both a and b, then (c,d) =

vec a = vec i + 2vec j + 3vec k, vec b = -vec i + 2vec j + vec k, rArr3vec i + vec j and vec d is normal to both vec a and vec b then (vec c, vec d)

If a = I + j - k, b = I - j + k, c = I - j - k then a xx (b xx c) =

If a = i + j - 2k, b = -i + 2j + k, c = i - 2j + 2k, then a unit vector parallel to a + b + c =

If a = 2i + j - 3k, b = I - 2j + k, c -I + j - 4k, d = I + j + k then (a xx b) xx (c xx d) =

If a = 3i - 2j + k, b = 2i - 4j - 3k, c = -i + 2j + 2k then a + b + c =

If a = 2i + 3j + 6k, b = 3i - 6j + 2k, c = 6i + 2j - 3k then a xx b =

If a = I + 2j - 3k, b = 2i + j + k, c = I + 3j - 2k then (a xx b) xx (b xx c) =