Find |a×b|, if a=^i−7^j+7^k and b=3^i−2^j+2^k
Let a=^i+4^j+2^k,b=3^i−2^j+7^k and c=2^i−^j+4^k. Find a vector d which is perpendicular to both a and b and c.d = 15
Find a unit vector perpendicular to each of the vectors a + b and a - b, where a=3^i+2^j+2^k and b=^i+2^j−2^k