Find the angle between u = (8.- 3) and v = (-3,- 8) round to the nearest tenth of a degree.
a. 180
c. 0
b. 90
d. 450

Step-by-step explanation:

First you must calculate the module or the magnitude of both vectors

The module of u is:

The module of v is:

Now we calculate the scalar product between both vectors

Finally we know that the scalar product of two vectors is equal to:

Where is the angle between the vectors u and v. Now we solve the equation for

the answer is 90°

Whenever the scalar product of two vectors is equals to zero it means that the angle between them is 90 °

c

step-by-step explanation: