Question

if magnitude of A*B is equal to the root of 3 vector A dot B find the Sum of the magnitude of A plus B

Answer 1

|AXB|= root 3 A.B

AB sin x=√3 x ABcosx

tan x=√3

x=60

now |A+B|2=A2+B2+2AB cos60

|A+B|=√(A2+B2+AB)
hope this helps ...if u still have doubt ask me again