Question

So couldn't read the previous tutors question sadly. probably threw it into a equation graphic. I CAN'T READ GRAPHICS LIKE THAT since I am blind. So here is the question again:

, a with right arrow above = 5b where B⃗ = 8 i^− 8 j^

Answer 1

1. A =3i - 9j

B = -4i + 2j

A.B = -12 - 18 = -30

2. A = 5i + 5j

B = 2i - 4j

A.B = 10 - 20 = -10

3. A = 8i + 4j

B = 41 - 8j

A.B = 32 - 32 = 0