Respuesta :

lets start by graph the first vector and the given one:

In this case the angle is:

[tex]135^{\circ}=\frac{3\pi}{4}[/tex]

And for the last one:

[tex]270^{\circ}=\frac{6\pi}{4}=\frac{3\pi}{2}[/tex]

Ver imagen TrequanD201098
Ver imagen TrequanD201098