A ship travels 84 km on a bearing of 17°, and then travels on a bearing of 107° for 135 km. Find the distance?
219 km
80 km
25 km
159 km
2.) Find the angle between the given vectors to the nearest tenth of a degree.
u = <-5, -4>, v = <-4, -3>
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You haven't described where you're stuck on these problems.
Each one is simple enough: you draw the triangle and solve using law of sines / cosines.
If you want a different method for #1, you find the x and y components (cosine & sine) of each vector, add those, and use the sums in the distance formula to find the length of the resultant.
If you want to take a shortcut on #2, you also have the cross-product and dot-product formulae to help you.