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# Quiz 9 - t< e't h a*tt-s-\$ a4 L^ J" zB:7\t d.e s lz 9...

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6j,- All work must be shown to receive credit. l;,t,il.'J']ilI"#-t'n"'T,"l"T'*;:)Tl "Xtriangresexi'l:"il'iith comprete',L.. c&se C) angleB:45" v /-fi=tll,3-o sidea:32.8km 1i^ 45 1,^A (, <(F2a.ao -z+q - -::- ;) =]j_::n=- = t;nts(=rv,rs\r.rn t;* { (" = 5i 'a ttl- ?o s)r,e A -- 0'q7 l1{ i-*::; , A t 2,1 .q' --;- 1:4-' (r.9.?tllr) al6t. r = z- la\ - 1'r''9 Srr. ti1. lo- 2_ <2 s:^(tgo-("g,f)- s)artl-7" b) angleB:103.4o 9r'<4s'o 'z-'6 -- 0-711ua1 / side a:42.7 Wn t t ; fA ansleC:19.;." A\a ,.,, /.^a,r b,/ - ,r-''u" t' )' ' lto - (toz^". + t q'c) =\zA = sz' <-^57o 5i^ lo?.1 l''-- = ' - ( i ,,r lq,6 s,^ )o 3- 4 3'L'v z * ,n b--,(2.?:,t,,t,r3,t( L2 YY' 1--^57o ./ 4q ,5 a.'- rar" 6, 1. (5 points) Solve using the law of cosines lif porribL a) side a:15 m side b :25 m side c:28 m A t5 C ^tl b- - c- - ^ttrbL'cL -' aR a'o b b) (,>f +Pl- - (z!) side b :385 mi angle C:67' side a:490 mi 't (,r) Qr ) B A?- L c'f c -- ): tzt- ,ng-' (# \ , L .oJ Q \ .150 /_ cL. --Ib'- TaucosC 2 o! cosC ?'t'C lo Precalculus March 26,2010 L. Brubaker 49. s K ,(- 1 i ,.r Lo1.rt

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