**TI83F* AppVariable file 12/17/08, 18:24 RANDOMG!4567|w B -triangles -graphs@harmonicsHarmonics:d=asin(wt)whenatequalibriumd=acos(wt)otherwise#amplitude=|a|*1(scrolldown)Pperiod=2TT---wfrequency=w#---*2TTPPSolving Triangles 3SolvingTriangles:lawofsines:abc---=---=---#sinAsinBsinC*.1(varsexplainedonback)PLawifCosines:.aa=bb+cc-2bcCos(A)]*orbb=aa+cc-2acCos(B)]#*or*cc=aa+bb-2abCos(C)]1P  AAS,ASA=lawofsinesSSS,SAS=lawofcosinesSSAifAisacuteanda=his*lawofsines1P  SSAifAisacuteandhb*=lawofsines1P   P 8P@0     @<0 & 1"` " > 0  0 `@@`010%$'0 H H`l\0PTriangle AreasTriangleAreas:Whentwosidesandoneangleareknownofanobliquetriangle:1#area=--bcSin(A)*21(variationsonflipside)P UseHeron'sformulaifallsidesareknown:______________\/s(s-a)(s-b)(s-c)#a+b+c*wheres=---------12P 1area=--abSin(C)2or1#area=--acSin(B)*2P"FunctionsXFunctions:evenfunction:f(-x)=f(x)oddfunction:f(-x)=-f(x)reflectacrossxaxis:-f(x)#reflectacrossyaxis:f(-x)*1(more)P standardquadriadic:a(x-h)^2+kwhereaisnotzero.vertex=(h,k). quadriaticequation:#axx+bx=c*.1"(more)P Minimumvalue:-bifa>0x=---2aMaximumvalue:#-b*ifa<0x=---12aP PBasic Graphing d `Aa}q@@;"!! ! Z!!8 * ( ~(< <`|~%.,DistanceFormulaP `` @ p `P0 P@ qX8 @0 ?a\0C Lp@D!0@D! p@4DN0UUU p0 0 <$08 0@`8 >#!Midpoint*.P ` 00`00@  0@$aC`0m0$m c$!..#PointSlope*.P%Slope. )`A0c6    p 0@UUUU@L HccL26HL 6p68cc0 @PSlopeIntersect:y=mx+b.StandardForm:Ax+Bx+C=0#.*.1.PParallelif:slope1=slope2.perpendicularif: slope1=-1/slope2P P Misc0(Misc CompountInterest:/r\ntP|1+--|#\n/t=years*andn=1foryearly,4for1quarterlyetc.P!radians: 1/2revolution=TT 1/4revolution=TT/21revolution=2TT#*(etc.1.P QuadriaticFormula:-b(+or-)sqrt(bb-4ac)x=--------------------2aPP$