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. s <br /> TRIG6iqa kTRIC <br /> B B <br /> ; <br /> 3 <br /> < <br /> ;b b C gro <br /> ea- <br /> a +Y.�j ..� fi ,c s. •� �' .meg k f._ '''SxR1 <br /> r { t Req tf <br /> A'B,c +a• b c : <br /> �A,B, b <br /> A,a <br /> J <br /> - ,� A. <br /> -2 �s _ g' b B, yG� <br /> ,O'J'101 <br /> ,'1 .• a X� j U }.. (liva4 Regsir <br /> rA, B,a .b, c, C at' 8 #c k yer r <br /> s' <br /> s� A, a, <br /> M (A+B) <br /> r- a, b, C A, B,._Q,. ;I�B",1 <br /> f. <br /> o 3 S. <br /> ti a, b, d A a+b+ e <br /> B, C a ,sino s�0 <br /> 2 -x :7, L.r1� <br /> ! a+b+ <br /> a, b, a c <br /> Area` a= 2 , area =' 4`a &_ �'a---c <br /> A, b, e` Area b e sin <br /> area <br /> }} <br /> wa Lf - $�4,B, a Area area a az— a <br /> J-: REDUCTION TO HQR#ZONTAL ` <br /> RED <br /> Horizontal dist $1 distance multiplied by the <br /> { cosies q e tcert►cal angle� us:slope distance=319.4 ft. <br /> a�gtgrc .f r S;ert. arse=b°10: Pro able,Page IX cos b°IOz= <br /> "1pe l dis nce=319.4X.9959=318.,09 ft. . <br /> 9959. Horizontal to <br /> c.• { ;^ r $ rgl� Horizontal distance also=Slope distance$sinus slope <br /> distance times (1—cosine of vertical angle). With the <br /> qe sarae figures as in the preceding example,the Mow- <br /> Hosiputaldistance inifresultlw ed.Cosine 5°101=. 1—.9916 .0041. <br /> 319A 1=9.4x1.31=318.09 ft. <br /> When the rise is known,the boo ntal distance is approximately:—the slopp aist- <br /> ance less t1e square of the rise divided by twice the supe distance. Thus:rise-14 ft., <br /> :slop'e distanea—M .8 it.,,Hertz.- <br /> d <br /> al distgpe A ' —8024—&32-MM ft. <br /> X 302.6 <br /> MADE.IN U.$,A. <br />