- #1
Final777
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Hey everyone, I'm pretty new here but a friend referenced this place and I thought I'd ask here. Some simple Linear algebra homework but I can't seem to get my head around this one.
Find the cosine of the angle Phi between the diagonals of a parallelogram whose sides are equal to a and b, if the angle between them is alpha.
I'm aware the helpers here would rather I showed some work on my part prior to asking for help, but I'm rather stumped on this, so any hints/help would be quite welcome. =|
Find the cosine of the angle Phi between the diagonals of a parallelogram whose sides are equal to a and b, if the angle between them is alpha.
I'm aware the helpers here would rather I showed some work on my part prior to asking for help, but I'm rather stumped on this, so any hints/help would be quite welcome. =|