I\'m asking this question again because I got different answers the first time I

Question

I'm asking this question again because I got different answers the first time I posted.

In its daily prowl of the neighborhood, a cat makes a displacement of 100 due north, followed by a 76 displacement due west.

Part A
Find the magnitude and direction of the displacement required for the cat to return home.
Express your answer using three significant figures.

=

Is the correct answer: Square root (100^2 + 76^2) = 125.6?

Part B
Express your answer using two significant figures and give your answer north of west (not south of east as stated below).
= south of east

I get 52.76 degrees north of west instead of 57.76 degrees? Which is correct?

Explanation / Answer

tan-1(76/100)=37 degrees due NW

This is the answer

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