Question

If a=2i +3j-k; b=i- j +2k and c=i+2j+k
26. Find the magnitude of
(A) à
(B) a+b
(Da-b+o
(C) a-c​

Answer 1

Answer:

Step-by-step explanation:

magnitude of a=square root 4+9+1

=square root 14

magnitude of a+b=for this first we want to find a+b

3i+5j+k

=square root 9+25+1

=sqrt 35

magnitude of a-b+c=

first we want to find a-b+c

=4i+4j+2k

=sqrt 16+16+4

=sqrt 36

=6

magnitude of a-c

=first we want to find a-c

=i+j-2k

=sqrt 1+1+4

=sqrt 6