- #1
gracy
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Homework Statement
A particle undergoes three successive displacements given by ##S_1##=√2 m North- East, ##S_2##=2m due south and ##S_3##=4m 30 degree north of west , then find the magnitude of net displacement?
Homework Equations
##S##= ##S_1## + ##S_2## + ##S_3##
The Attempt at a Solution
I don't understand how to represent these displacement in the form of vectors.
I do have solution of this problem. According to the given solution
##S_1## = (√2 cos 45)i + (√2sin 45) j
I can't comprehend how the simple North-east turned into this equation? And I think the question not at all mentions angle 45 . Is there any convention or thumb rule that I am missing while dealing with directions?