Question

Two vector are given as vector A = 3î + 9j and vector B = 8î - 4j . Find | vector A + Vector B| and a unit vector parallel to the resultant vector.

please urgently.​

Answer 1

Answer:

Explanation:

A = 3i + 9j

B =8i - 4j

A + B = 11i + 5j

|A + B| = $\sqrt{121 +25}$ = $\sqrt{146}$ units

Unit vector = A + B / |A+B|

                  = (11i + 5j)/$\sqrt{146\\}$