8. Vectors

Find the direction of the following vector: $u ⃗=⟨-10,10⟩$.

Find the direction of the following vector: $u⃗=\langle\frac{5\surd3}{3},5\rangle$.

If a vector has magnitude $|v ⃗ |=13$ and direction $θ=157.38°$, find the vector’s horizontal and vertical components.

If a vector has magnitude $|v ⃗ |=5$ and direction $\theta=\frac{7\pi}{4}$, find the vector’s horizontal and vertical components.