Question

magnitude of 3i^+4j^ and 2i^+3j^​

Answer 1

Answer:

The magnitude of the vector x=(ai+bj+ck) is |x|=a2+b+c2−−−−−−−−√

Applying this to your vectors:

|A|=32+(−4)2+42−−−−−−−−−−−−−√=9+16+16−−−−−−−−−√=41−−√

|B|=22+32+(−7)2−−−−−−−−−−−−−√=4+9+49−−−−−−−−√=62−−√