cosa) ( I — cosa — sina 'T^^^ ) doc

. G* . a r^ / I— cose . \ ,

H — rsin^tp I 2 ( cosa -h — ^ sina icosaaa,

(i — cosa)sinac?a j-sin*^ j 2sinacosac/a;

Coefficients de T équation (18) :

(sin^ — sina)^rfa j-sin'^ I 2sin^arfa,

A, = : — I (sina sin<p)sin^af/a — -, 1 (sin<p — sina)^Éfa

H-7-Ysm''(p I ( -^ L)sin''aaa 1 dsin^^aa^l?

X(sin^ — sina3'sinarfa + 7 -*r6in*^ | i- — ^rl^ Isin^ac/a,

* 2 sin

(cosa — cos<p)(sin^ — sina)det-\ ^sin^^ | asinacosarfa,

I ^^ X • ^ 2(1— cosô) r^ . 2 ^

A^ = — / (i — cosa)smaaaH — ^ — -, -1 sm^aaoc

H — ^--^ 1 (sin(p — sin ûcyda rSin''(p 1 smacosaaa

G* . 2 1— COS0/ r^ . 2 , r^ ' 2 ^ \

H — rsm <p — : I 2 sin a aa — / rîsm aaa))

A^ = — 2/ (sin^ — sinaydoc — 21 sin^ada

Je Jo

H ^sin*(p( / 2sin^arfa-T- / 2 sin* a rfaj;

Coefficients de l'équation (19):

f (sin^ — sina)(cosa — cos^)^a j^sin'^ I 2sinacosû;e/a,

o ^ ^ Jo

«,= / (sin^ — sina) (cosa — cos<p)d(t — I (sinô — sina)(cosa — cos(p)rfa

Jo t/0

r sm* (p I 2 sina cosa da ,

h= — ^7j^ j (sinô — sina) (cosa — cos(p) (sinir — sina)c?a

+ ^ I (sin<p — sina) (cosa — cos(p)da

— - ^ sin <P(^j^ 1 sin^acosac^a -h^ I 2sinacosac?a |»

I f^ *«=7ri^J, (sinô — sina)" (cosa — cos(p)^a

H- ^"^î^ / (sin^ — sina) (cosa — cos(p) sin a i^a

I G» . 2 r^/ 2sina\ .

-H-^sin (pj^ (^4.-^j^uiacosarfa,

«\= I (cO|^T-cos(p)*rf^-)M,4-^sin"(p r 2cos'arfa, Jo .^-^ îi a J^ • '