Question

if the sum of two unit vectors is a unit vector the mAgnetude of different is

Answer 1

Answer:

let two vectors are a,b then

resultant of sum = (a^2 + b^2 + 2abcos@)1/2 = 1 (given)

a = b = 1 (unit vector)

1+1+2cos@ = 1

cos@ =

-1/2 .................1

now resultant of difference = magnitude (a-b)

R = (a^2 + b^2 - 2abcos@)1/2

a = b = 1 , cos@ = -1/2 so

R = [ 1+1+1]1/2 = √3

Answer 2

Answer:

o

Explanation:

because a unit vector magnitude is 1.there two unit vector so obviously his different is zero.