two vectors of equal magnitude have a resultant equal to either of them, then the angle between them will be equal to...?

Hello!

The resultant (R) of two forces (A and B) is mathematically represented as

R^{2} = A^{2} + B^{2} + 2ABCosθ

where θ is the angle between forces A and B. Now, as all three forces are equal, so

let R = A = B = x

So,

x^{2} = x^{2} + x^{2} + 2x.xCosθ

or x^{2} = 2x^{2} (1 + Cosθ)

1/2 = 1 + Cosθ

thus , Cosθ = -1/2

or ** θ = 120**^{o}

The answer was calculated correctly by @prakharmilitary.

Hello @prakharmilitary ! good job, keep it going!

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