Question

If A + B = C and A = B = c then what should be the
angle between A and B ?

Answer 1

Explanation:

dot product of vector a and b gives abcos(θ)

similarly modulus of cross product of two vectors gives absin(θ)

therefore by solving the matrix we get a

2

b

2

−a

2

b

2

cos

2

θ +a

2

b

2

−a

2

b

2

cos

2

θ

since a and b are unit vectors mod of a and b are 1

so we get 1−cos

2

θ+sin

2

θ=2sin

2

θ=1−cos2θ

Answer 2

❤ Hello Mate ❤

Answer -

Simple, the angle between the 2vectors is o degree.

First atbc =>

(a ^ 2 + b ^ 2 + 2abcos (theta)) (1/2) = Ic where theta is the angle between a and b.

Againatbc => (a + b) * 2 = c ^ 2 | 0 | 2 = a ^ 2 + b ^ 2 + 2abcos (theta)

=> a ^ 2 + b ^ 2 + 2aba ^ 2 + b ^ 2 + 2abcos (theta) ((a + b) - 25a12 + b2 + 2ab)Hmm

= > 2abcos (theta) = 2ab

=> cos (theta) = 1

=> theta%

Hope it helps uh !!