Question

the magnitude of resultant of the two vectors of magnitude 3 and 4 is 1. find the angle between them

Answer 1

angle between them is 180

Answer 2

Explanation:

√A^2+B^2+2AB=|A+B|

√3^2+4^2+2*3*4cosa=1

√9+16+2*3*4cosa=1

24cosa=-24

cosa=-1

a=180°