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4 59, I ?r�' TRIGONOMETRIC FORMULAE <br /> B 1771 <br /> . ; <br /> L \¢ y p c a c 3( a <br /> a <br /> "1 <br /> ab Od (i <br /> _° �• 3 `Right T e` Oblique Triangles <br /> Solution•of Right Trlangies <br /> 4-. 3 <br /> For Angle sin,�a`,coe= c,tan=,b,cot='Q,sec�'b, cosec=. <br /> t a <br /> a, b .a ;tahA b=cot B,a= s=a <br /> -2-1 a, a rin A—a—cos B,b=� <br /> 3. 3 T- <br /> - a .� <br /> / 0 y G =9011—A,b ss a COLA 0 —ixt <br /> 3,11 a B=90"A,a=btanA,a= <br /> 1 /to .7 ,7 o;, A. 4 <br /> A, b B=90°—A,a 4--A sin_ A,b w o cos A, <br /> 3,4 6 <br /> �� �' '-•� � __-- = <br /> Solution, of Qbliqus <br /> C, b6 p1n B;0, = 180--=(A,+JY), <br /> sin A <br /> C b sin Aa am <br /> _ sin O <br /> fi <br /> 180° (A , <br /> 3. 4 <br /> '4-4 ff =140°—4--tan J(A—B] (a—�twt}(A+B} <br /> a sin a <br /> 1 , c —,sin A + <br /> C <br /> b ' <br /> G. <br /> = <br /> U L ' <br /> .�;C e <br /> ia�Ab a <br /> f .r.. <br /> lo 7 y sing-� a <br /> • <br /> $ ¢ > aha <br /> 8— s=a <br /> 'a ares'= b a sine <br /> s� reel -. <br /> ' � t <br /> * p <br /> i 1.9 y x� =14 ft, <br /> I <br /> 4 ca s–aa�rage <br /> ft. <br /> BADE IN III,A.A. <br /> • <br />