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PAstudent
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Homework Statement
[/B]
Vector A lies in the yz plane 63.0 degrees from the +y axis, has a positive z component, and has a magnitude 3.20 units. Vector B lies in the xz 48.0 degrees from the +x axis, has positive z component, and has magnitude 1.40 units.
a) find A dot B
b) find A x B
c) the angle between A and B
Homework Equations
dot product and cross product [/B]
The Attempt at a Solution
What I am trying is to put them in unit vector notation like:
A= axi+ayj so A= [3.20cos(63.0)]i+[3.20sin(63.0)] and then the same for vector B
Then once I have those components I could easily do dot and cross product. My question is what does that "has a positive z component " have to do with anything? And is my setup correct?[/B]