Question

Given: Ā =2i^+3j^ and Bvector= 5i^-6j^.The magnitude of Ā+Bvector is
(1) 4 units
(2) 10 units
(3) 158 units
(4) 161 units​

Answer 1

Answer:

10

Explanation:

|a+b|=(2+5)i+(3+(-6))j

|a+b|=7i-3j

magnitude=under root of (7^2+3^2+2*7*3*cos0)   { using [$\sqrt{a^2+b^2+2abcos tita ]$

$\sqrt{100}$

10 units

option (b)