justiceokere3760 justiceokere3760 12-06-2022 Mathematics contestada Find the modulus and the unit vector along the sum of the vectors. - r₁ +r₂ +r3 given that r₁ = 2i+j+4k - r₂ = 3i-2j+7k, r3 = 5i + 2j - 3k. 2
