Hey everybody I know I have been posting a lot and I am sorry, I just really want to be sure that I am doing my H.W. right and getting the right answers.
Vector A = <1,-4> and vector B = <5,7>
a) Find the vector C=2A-B
For C I got <-3,1>
b) Find the magnitude of C
For this I got /square root 10/
c) Find 'Theta' the direction of C such that 0degrees is 'less than or equal to' "theta" < 360 degrees.
d) Find the angle between the vectors A and B...
The first two I just need verification but the last two I couldn't get
If anybody can help me...thanks.