if a = 2i-3j+7k b = i-2j and c = j-k then a.(b×c)
Answers
Answered by
7
Answer:
Explanation: a.(b×c)
( b×c) means cross product = [I j k]
1 -2 0
0 1 -1
Therefore (b×c)= i(2-0)-j(-1-0)+k(1)
= 2i+j+k
a.( b×c) means dot product = 2×2-3+7
= 4-3+7
=8
Similar questions