someone help me in physics stuff?

While following the directions on a treasure
map, a pirate walks 21.1 m north, then turns
and walks 7.5 m east.
a) What is the magnitude of the sin-
gle straight-line displacement that the pirate
could have taken to reach the treasure?
Answer in units of m.
At what angle with the north would he
have to walk?
Answer in units of ◦.
 
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