Question

if a vector b is added to vector a the result is 6i+j .if b is subtracted from a the rsult is -4i+7j. what is magnitude of vector a& b

Answer 1

Answer:

Explanation:

a + b =  6i+j

a-b = -4i+7j

2a = 2i + 8j

a =  i +4j

2b = 10i - 6j

b = 5i - 3j