bbyitskeke83391 bbyitskeke83391 08-05-2024 Mathematics Answered If the moduli of the vectors a, b, c are 3, 4, 5 respectively and a and b + c, b and c + a, c and a + b are mutually perpendicular, then the modulus of a + b + c isA. √12B. 12C. 5√2D. 50