Unformatted text preview: ~ AC and ~ BC (which will depend on your parameter t ), then calculate their norms, then solve. Ouch! • Hint for Section 3.3 #8: this is similar to what we did in class; see Example 9 page 153. Note that unless ~ 0 is on the line, it is NOT correct to just project your position vector; a good picture will help you see that. • Hint for Section 3.5 #1: a triangle has exactly half of the area of the corresponding parallelogram. • Hint for Section 3.5 #6: the hypothesis lets you write ~u =~v~w so you can use the algebraic rules (page 177) to simplify the expression (recalling that ~u × ~u = ~ 0 for any vector ~u ). (This question is mainly for fun.) 1...
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