Question

I need help in pre cal please

Answer 1

I would say the answer is B

Answer 2

The resultant vector is the sum of the two velocity vectors.

`\left[\begin{array}{ccc}-30\\12\end{array}\right] + \left[\begin{array}{ccc}2\\-4\end{array}\right] = \left[\begin{array}{ccc}-28\\8\end{array}\right]`

The attached picture (not to scale) shows the position of the resultant vector. You want to know the angle θ. In the right triangle,

`image`

The boats's heading is 16 degrees north of west.