Practice Test 2

For the vectors described (angles measured in degrees counterclockwise from the positive $x$-axis), $\mathbf{u}$ has magnitude $10$ at $30^\circ$ and $\mathbf{v}$ has magnitude $10$ at $150^\circ$. What is the magnitude of the sum $\mathbf{u}+\mathbf{v}$? (Direction not needed.)

For the vectors described (angles measured in degrees counterclockwise from the positive $x$-axis), $\mathbf{u}$ has magnitude $10$ at $30^\circ$ and $\mathbf{v}$ has magnitude $10$ at $150^\circ$. What is the magnitude of the sum $\mathbf{u}+\mathbf{v}$? (Direction not needed.)

Using the information provided (angles measured in degrees counterclockwise from the positive $x$-axis), vector $\mathbf{u}$ has magnitude $8$ at $0^\circ$ and vector $\mathbf{v}$ has magnitude $6$ at $120^\circ$. What is $\lvert \mathbf{u}+\mathbf{v} \rvert$?

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