Question

i need help with the two missing blanks...which answer goes in the first and last box?

Answer 1

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

In this case the angle is:

$135^{\circ}=\frac{3\pi}{4}$

And for the last one:

$270^{\circ}=\frac{6\pi}{4}=\frac{3\pi}{2}$