Question

If vector A+vectorB=vectorC under what condition A^2+B^2=C^2?​

Answer 1

Answer:

Given that

vector a + vector b = vector c

Which means

C^2 = A^2 + B^2 + 2 A B cosx

Where x is the angle between vector a & vector b

But it is given that

A^2+B^2= C^2

Thus

C^2 = C^2 + 2 A B cosx

2A B cosx = 0

A &B are not zero therefore

Cosx = 0

X = 90 degree

Explanation:

@loki

Answer 2

Explanation:

Given that

vector a + vector b = vector c

Which means

C^2 = A^2 + B^2 + 2 A B cosx

Where x is the angle between vector a & vector b

But it is given that

A^2+B^2= C^2

Thus

C^2 = C^2 + 2 A B cosx

2A B cosx = 0

A &B are not zero therefore

Cosx = 0

X = 90 degree