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TRIOONOM&RIC FORMUUE <br /> / 93 " 'JN94 B '7 <br /> 'r,� 2_ B <br /> �.. ti � a <br /> Y z j' 1 — - / a a a <br /> 7v ?� 3 b A. <br /> i+ X ' 9; Right Tr '--q---Oblique Tri' b <br /> J <br /> Zf 9olu of Rtht ria <br /> i 1 y 7�, b g a T . esL]��6 a <br /> For Given tan cot CO/BC <br /> � , a , = .�MC'C��b, ' a <br /> / <br /> a,b _ tan A b=cot B,o =v aTT7= a 1 } ae <br /> J j % r y r x_V �'�' sin At a=co&B b o__ <br /> b=a CotA,'6® a ' <br /> sin A. �'4,VJ <br /> ?. v 7 ar . a, + B—9()°—A.a = b tan Ai o= b /D,7\( <br /> 7_ f h <br /> j cos A. <br /> �' ✓:,' 'I.p a, k =90°—A,a= osin A,b=acoo A, ,'J .7 � <br /> / 9 Y. z` i I A u#ion of Oblique Triangle& - <br /> s y <br /> •. 1 `o C a sin B C 59.46 <br /> s '' 3 �%2 ala.A , = Iso°—(A-► B),o =e A 0 <br /> b sin A <br /> a- <br /> 10, 17 �� A,� �,. aa#_ ,C= 180°—(A-I-B),o = a sin.a ••. <br /> re. /, U .,.8 Bin A. Q(�.(•j� <br /> �' y 'I s✓ A jB c Ar�B=1800—C tan j(A—B)=(a—b)tan+}(A+B) <br /> 7 b U N46 a sin C + <br /> �/y S o = 46 <br /> �/ 3' i OG< Z sinA ' <br /> t J -- C n <br /> s_ si +jA= <br /> � <br /> �Q/fJ Y b c . <br /> �} "nB_Y ao C= —(A+ <br /> a+2 d <br /> area = a aT a— s--o <br /> area = b o 2 A 1,x.7$ /Z•7 <br /> D <br /> a9 oin B gin a <br /> 2 sin A <br /> e r i , <br /> '� f, / ✓�' r' tDUCTION TO HORIZONTAL " <br /> Horizontal distance <br /> =Slope distance sa <br /> cosine of tie vertical angle.Thus:slope <br /> 4 n J <br /> Vhrt.anYl0=60Id...,From Table,Fage <br /> & 99ft Horizontal diatanoe=919.4X. tt <br /> d` V Horizontal distance also—Slope dlstanoe us <br /> distance times(1—cosine of ver#aal <br /> •1 <br /> igu M843-in the rec <br /> P edia�eza�t>re, . <br /> frig . ult is obtained,Cosine lN'1W=. 1 <br /> ; 1 <br /> 1.31,U9.4-i.�1=318 99 ft <br /> ' D,� 3 Wh a rise is kaogn, t1Di1 al Aiat&nce is apv <br /> ! agnat'e of the Y twioa tha&logedisgweaT6�wpVI4iL. <br /> / s <br /> ,i4 x 1* <br /> �W <br /> t <br /> i <br /> 1 <br /> .. •!l - ,, 1. , , <br /> • °.r <br />