Vector question. let v=< -2,1> u=< 3,-5> , find:

1)v * u
2)2)find the angle formed between v and u

1. )

2.) The angle between v and u is 147.52°.

Step-by-step explanation:

Given:

To Find:

1.

2.

Solution:

is scalar product given as,

Here only i.i = j.j =1 and i.j = j.i = 0

∴

Now, Substituting the above values we get

As it is negative mean is in Second Quadrant Because Cosine is negative in Second Quadrant.

1. )

2.) The angle between v and u is 147.52°.

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step-by-step explanation:

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make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here