Calculus 3: Dot Product
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Vector projection equation b onto a
*notice there's the scalar projection in the parentheses
How to find angles between 2 linear equations ex. 2x-y = 3; 3x + y = 7;
1) Find x and y intercepts 2) <x-int, y-int> x and y intercepts become components 2a) 2 vectors 3) use corollary cos(theta) = u*v/ (|v||u|)
What variable are you trying to find when using scalar projection?
Q
Dot product
if a = <a_1, a_2, a_3>, b = <b_1, b_2, b_3> a * b = a1b1 + a2b2 + a3b3