Physics Vectors ASAP! Fast 10 pts!?

A tourist bus has to go to an amusement part 16 km East. It travels 5 km east, then 4 km, 45º South of East and then takes a turn and finally reached the amusement park. Find the displacement and direction of the final turn it took to reach the amusement park. So if a triangle is formed, its sides would be 4 km,... show more A tourist bus has to go to an amusement part 16 km East. It travels 5 km east, then 4 km, 45º South of East and then takes a turn and finally reached the amusement park. Find the displacement and direction of the final turn it took to reach the amusement park.

So if a triangle is formed, its sides would be 4 km, 11 km (16-5) and the final turn which is missing. Please help ASAP! and step by step from the start pls.
Thanks!
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