me351_lec04

Now the three sides of triangle ced are known or can

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Unformatted text preview: the diagram, we find |BC | = 34, |AD| = 36. Using the link angles just computed we have >> ang=(pi/180)*[110,174,61] ang = 1.9199 3.0369 1.0647 Then we find 4 >> dc=-36*exp(i*ang(1))+84*exp(i*ang(2))+34*exp(i*ang(3)) dc = -54.7436 + 4.6885i Thus, arg(DC ) = 175◦ , |DC | = 55 (of course, these can be measured directly). Now the three sides of triangle CED are known (or can be measured) – |CE | = 24.8, |ED| = 40 – thus all interior angles can be determined. The law of cosines gives E CD = 42◦ , C DE = 24◦ and we find: arg...
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