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trigonometría esférica

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Ley de los senos<br />

I )<br />

FORMULAS DE TRIGONOMETRIA ESFERICA<br />

sincsinA = sinasinC sinasin B = sin bsinA sin bsinC = sincsin B<br />

Ley de los cosenos para lados<br />

II )<br />

cosa = cosbcosc+ sin bsinccosA cosb = cosccosa + sincsinacosB cosc = cosacosb+ sinasinbcosC Ley de los cosenos para ángulos<br />

III )<br />

IV )<br />

V )<br />

cosA =− cosBcosC+ sin BsinCcosa cosB =− cosCcosA + sinCsinAcosb cosC =− cosAcosB+ sinAsinBcosc sin acosB = cosbsinc− sin bcosccosA sin acosC = coscsinb− sin ccosbcosA sin bcosA = cosasinc− sin acosccosB sin bcosC = coscsina − sin ccosacosB sin ccosA = cosasinb− sin acosbcosC sin ccosB = cosbsina − sin bcosacosC sin Acosb = cosBsinC+ cosCsin Bcosa sin Acosc = cosCsin B+ cosBsinCcosa sin Bcosa = cosAsinC+ cosCsinAcosb sin Bcosc = cosCsinA + cosAsinCcosb sin Ccosa = cosAsin B+ cosBsinAcosc sin Ccosb = cosBsinA +<br />

cosAsin Bcosc


VI )<br />

VII )<br />

sin acotb = cot BsinC+ cosCcosa sin acotc = cot Csin B+ cosBcosa sin bcota = cot AsinC+ cosCcosb sin bcotc = cot CsinA + cosAcosb sin ccota = cot Asin B+ cosBcosc sin ccotb = cot BsinA + cosAcosc sin AcotB = cot bsinc− cosccosA sin AcotC = cot csin b− cosbcosA sin BcotA = cot asinc− cosccosB sin BcotC = cot csina − cosacosB sin CcotA = cot asin b− cosbcosC sin CcotB = cot bsina − cosacosC Ley de las tangentes<br />

VIII )<br />

( A − B)<br />

( a − b)<br />

tan tan<br />

2<br />

=<br />

2<br />

( A + B)<br />

( a + b)<br />

tan tan<br />

2<br />

2<br />

( B−C) ( b−c) tan tan<br />

2 2<br />

=<br />

( B+ C)<br />

( b+ c)<br />

tan tan<br />

2 2<br />

( A − C)<br />

( a − c)<br />

tan tan<br />

2 2<br />

=<br />

( A + C)<br />

( a + c)<br />

tan tan<br />

2 2


Fórmulas de los semiángulos<br />

a + b+ c<br />

s =<br />

2<br />

____________________________________________________________________<br />

IX )<br />

sin<br />

2<br />

A sin( s− b) sin(<br />

s− c)<br />

( ) ( )<br />

2 B sin s− c sin s− a<br />

=<br />

sin =<br />

2 sin bsin c<br />

2 sinasinc sin<br />

2<br />

C sin( s− a) sin(<br />

s− b)<br />

=<br />

2 sin asin b<br />

_____________________________________________________________________<br />

X )<br />

cos<br />

2<br />

A sin() s sin(<br />

s− a)<br />

() ( )<br />

2 B sin s sin s−b =<br />

cos =<br />

2 sin bsinc 2 sin asinc cos<br />

2<br />

C sin() s sin(<br />

s−c) =<br />

2 sin asin b<br />

_____________________________________________________________________<br />

XI )<br />

tan<br />

2<br />

A sin( s− b) sin(<br />

s− c)<br />

=<br />

2 sin() s sin(<br />

s−a) tan<br />

2<br />

tan<br />

C sin( s− a) sin(<br />

s− b)<br />

=<br />

2 sin() s sin(<br />

s−c) 2<br />

B sin( s− c) sin(<br />

s− a)<br />

=<br />

2 sin ssin( s−b) _____________________________________________________________________


Fórmulas de los semilados<br />

A + B+ C<br />

S =<br />

2<br />

_____________________________________________________________________<br />

XII )<br />

sin<br />

2<br />

a cos( S) cos(<br />

S− A)<br />

( ) ( )<br />

2 b cos S cos S−B =<br />

sin =<br />

2 sin BsinC 2 sinAsinC sin<br />

2<br />

c cos( S) cos(<br />

S−C) =<br />

2 sinAsin B<br />

_____________________________________________________________________<br />

XIII )<br />

cos<br />

2<br />

a cos( S− B) cos(<br />

S− C)<br />

( ) ( )<br />

2 b cos S− A cos S− C<br />

=<br />

cos =<br />

2 sin BsinC 2 sinAsinC cos<br />

2<br />

c cos( S− A) cos(<br />

S− B)<br />

=<br />

2 sinasin b<br />

_____________________________________________________________________<br />

XIV )<br />

tan<br />

2<br />

a cos( S) cos(<br />

S−A) =<br />

2 cos( S− B) cos(<br />

S− C)<br />

tan<br />

2<br />

tan<br />

c cos( S) cos(<br />

S−C) =<br />

2 cos( S− A) cos(<br />

S− B)<br />

2<br />

b cos( S) cos(<br />

S−B) =<br />

2 cos( S− A) sin(<br />

S− C)<br />

_____________________________________________________________________


Analogías de Neper<br />

XV )<br />

( A − B)<br />

( a − b)<br />

sin tan<br />

2<br />

=<br />

2<br />

( A + B)<br />

c<br />

sin<br />

tan<br />

2<br />

2<br />

( A − B)<br />

( a + b)<br />

cos tan<br />

2<br />

2<br />

=<br />

( A + B)<br />

c<br />

cos<br />

tan<br />

2<br />

2<br />

( a − b)<br />

( A − B)<br />

sin tan<br />

2<br />

=<br />

2<br />

( a + b)<br />

C<br />

sin<br />

tan<br />

2<br />

2<br />

( a − b)<br />

( A + B)<br />

cos tan<br />

2<br />

2<br />

=<br />

( a + b)<br />

C<br />

cos<br />

tan<br />

2<br />

2<br />

_____________________________________________________________________<br />

XVI )<br />

( A − C)<br />

( a − c)<br />

sin tan<br />

2<br />

2<br />

=<br />

( A + C)<br />

b<br />

sin<br />

tan<br />

2<br />

2<br />

( A − C)<br />

( a + c)<br />

cos tan<br />

2<br />

2<br />

=<br />

( A + C)<br />

b<br />

cos<br />

tan<br />

2<br />

2<br />

( a − c)<br />

( A − C)<br />

sin tan<br />

2<br />

2<br />

=<br />

( a + c)<br />

B<br />

sin<br />

tan<br />

2<br />

2<br />

( a − c)<br />

( A + C)<br />

cos tan<br />

2<br />

2<br />

=<br />

( a + c)<br />

B<br />

cos<br />

tan<br />

2<br />

2<br />

_____________________________________________________________________<br />

XVII )<br />

( B−C) ( b−c) sin tan<br />

2 2<br />

=<br />

( B+ C)<br />

a<br />

sin<br />

tan<br />

2 2<br />

( B−C) ( b+ c)<br />

cos tan<br />

2 2<br />

=<br />

( B+ C)<br />

a<br />

cos<br />

tan<br />

2 2<br />

( b−c) ( B−C) sin tan<br />

2 2<br />

=<br />

( b+ c)<br />

A<br />

sin<br />

tan<br />

2 2<br />

( b−c) cos<br />

2<br />

=<br />

( b+ c)<br />

cos<br />

2<br />

( B+ C)<br />

tan<br />

2<br />

A<br />

tan<br />

2


Fórmulas de Gauss<br />

XVIII )<br />

( a − b)<br />

( A − B)<br />

sin sin<br />

2<br />

=<br />

2<br />

c C<br />

sin cos<br />

2<br />

2<br />

( a − b)<br />

( A + B)<br />

cos sin<br />

2<br />

=<br />

2<br />

c C<br />

cos cos<br />

2<br />

2<br />

( a + b)<br />

( A − B)<br />

sin cos<br />

2<br />

2<br />

=<br />

c C<br />

sin sin<br />

2<br />

2<br />

( a + b)<br />

( A + B)<br />

cos cos<br />

2<br />

2<br />

=<br />

c C<br />

cos sin<br />

2<br />

2<br />

_____________________________________________________________________<br />

XIX )<br />

( a − c)<br />

( A − C)<br />

sin sin<br />

2 2<br />

=<br />

b B<br />

sin cos<br />

2 2<br />

( a − c)<br />

( A + B)<br />

cos sin<br />

2 2<br />

=<br />

b B<br />

cos cos<br />

2 2<br />

( a + c)<br />

( A − C)<br />

sin cos<br />

2<br />

2<br />

=<br />

b B<br />

sin sin<br />

2 2<br />

( a + c)<br />

( A + C)<br />

cos cos<br />

2<br />

2<br />

=<br />

b B<br />

cos sin<br />

2<br />

2<br />

_____________________________________________________________________<br />

XX )<br />

( b−c) ( B−C) sin sin<br />

2 2<br />

=<br />

a A<br />

sin cos<br />

2 2<br />

( b−c) ( B+ C)<br />

cos sin<br />

2 2<br />

=<br />

a A<br />

cos cos<br />

2 2<br />

( b+ c)<br />

( B−C) sin cos<br />

2<br />

2<br />

=<br />

a A<br />

sin sin<br />

2 2<br />

( b+ c)<br />

( B+ C)<br />

cos cos<br />

2<br />

2<br />

=<br />

a A<br />

cos sin<br />

2 2

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