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If 𝐴 = 𝐵+𝐶 and the magnitude of 𝐴 , 𝐵 and 𝐶 are 5, 4 and 3 units the angle between
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If 𝐴 = 𝐵+𝐶 and the magnitude of 𝐴 , 𝐵 and 𝐶 are 5, 4 and 3 units the angle between 𝐴 and 𝐵 is
(a) cos-1 3/5
(b) cos-1 4/5
(c) 𝜋/2
(d) sin-1 3/4
(a) cos-1 3/5
(b) cos-1 4/5
(c) 𝜋/2
(d) sin-1 3/4
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