Question

what is the angle of between two forces of newton and 3 newton having resultant 4 newton

Answer 1

I don't know
I think another is 1 Ni

Answer 2

Answer:

Let the two vectors be A and B, and their resultant be R.

Let the angle between A and B be θ

A = 2 N

B = 3 N

R = 4 N

Now R² = A² + B² + 2AB cos θ

So, 4² = 2² + 3² + 2×2×3 cos θ

So, 16 = 4 + 9 + 12 cos θ

So, 16 = 13 + 12 cos θ

So, 3 = 12 cos θ

So, 3/12 = cos θ

So, cos θ = 1/4