Question

a=3i+2k , b=3j-4k , c=i+j+k . find (a*b)c​

Answer 1

Explanation:

$a = 3i + 2k \: \: b = 3j - 4k \: \: c = i + j + k \\ a.b = (3i + 2k)(3j - 4k) \\ a.b = 0 \\ (a.b).c = 0 \\ \\ hope \: it \: will \: help \: you$