# Angle of intersection between two parametric curves

by ElijahRockers
Tags: angle, intersection, parametric, vector
 P: 195 1. The problem statement, all variables and given/known data This is a problem involving parametric equations. r1= r2= <6-s,s-4,s2> At what point do the curves intersect? Find the angle of intersection, to the nearest degree. 3. The attempt at a solution I found the point of intersection, (2,0,16). This is when t=2 and s=4. I found the tangent vectors. d/dt(r1) = <1,-1,2t> d/ds(r2) = <-1,1,2s> I used r1$\cdot$r2 = |r1||r2|cos$\theta$, using the tangent vectors at t=2 and s=4, and solved for theta.. I came up with 23°, but the system tells me I'm wrong. What happened? EDIT:: Okay.... it seems like I was coming up with a different answer every time. Got it on my last try though. Gotta be more careful... for anyone wondering, the correct answer is 29°

 Related Discussions Calculus & Beyond Homework 3 Precalculus Mathematics Homework 6 Calculus & Beyond Homework 12 Precalculus Mathematics Homework 4 General Math 4