Question
find the magnitude and direction angle of the vector.
3i-4j and -3i-5j
3i-4j and -3i-5j
Answers
oobleck
Givem u,v I can find
u+v, u-v, u•v, u×v
I don't know what u and v is.
If all you want is each vector, then
|3-4j| = √(3^2+4^2) = 5
The direction θ is such that
tanθ = y/x = -4/3 so it is in QIV
Do -3-5j the same way.
u+v, u-v, u•v, u×v
I don't know what u and v is.
If all you want is each vector, then
|3-4j| = √(3^2+4^2) = 5
The direction θ is such that
tanθ = y/x = -4/3 so it is in QIV
Do -3-5j the same way.