Question

Two vectors are given by vector a = 6i+8.7j and vector b = 3.2 i +8j, the component of a vector a along the direction of vector b?

Answer 1

To find the component of any vector a along any vector b,

you need to dot a with the unit vector along b.

Answer 2

oh thank you :)

Answer 3

my answer is 89, it's incorrect :( @mashy

Answer 4

The component of a along b is
a*cos theta=?

Answer 5

We know a.b=a*b*cos theta
a*cos theta=a.b/b=89/b=?

Answer 6

Feel free to ask for more clarification