Question

If a vector + b vector is equal to C vector and a + b is equal to C then the angle included between a vector and b vector is​

Answer 1

Answer:

Given :

a

+

b

=

c

and a+b=c

So, c

2

=(

a

+

b

).(

a

+

b

)

Or (a+b)

2

=a

2

+b

2

+2

a

.

b

Or a

2

+b

2

+2ab=a

2

+b

2

+2abcosθ

So, cosθ=1

⟹ θ=0

o

Answer 2

Answer:

The included angle a & angle b = angle c