Questions on Algebra: Introduction to vectors, addition and scaling answered by real tutors!

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Question 89040: Can someone tell me if this is correct, and also I need to round it to the nearest tenth but I don't know how.......A plane with an airspeed of 450 mph if flying in the direction N35degrees West....im supposed to express the vector in terms of i&j......
my answer is -450sin35i + 450cos35j: Can someone tell me if this is correct, and also I need to round it to the nearest tenth but I don't know how.......A plane with an airspeed of 450 mph if flying in the direction N35degrees West....im supposed to express the vector in terms of i&j......
my answer is -450sin35i + 450cos35j
Answer by stanbon(18718) About Me  (Show Source):
You can put this solution on YOUR website!
I think N35 degrees W is an angle of 135 degrees
If your i corresponds to horizontal motion and your j corresponds to vertical
motion you might want an answer of 450(icos(135) + jsin(135))
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Cheers,
Stan H.