9. Vectors

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

Find the direction of the following vector: $u\text{⃗}=⟨\frac{5\surd 3}{3},5⟩$.

If a vector has magnitude $\mid v\text{⃗}\mid =13$ and direction $\theta =157.38°$, find the vector’s horizontal and vertical components.

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