Question

what is angle between 2N force and 3N force so that their resultant is 4N plzz answer

Answer 1

Answer :

Suppose two vectors are as,
A = 2 N
B = 3 N

Now resultant of given two vectors,
R = 4 N

Suppose the angle between A & B is x°.

We know that,
R^2 = A^2 + B^2 + 2AB cos x
=> 4^2 = 2^2 + 3^2 + 2×2×3 cos x
=> 16 = 4 + 9 + 12 cos x
=> 12 cos x = 3
=> cos x = 1/4
●=> x = cos^-1 (1/4)°


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