[" [c] "^(3cos(alpha+beta+gamma))quad [D...

[" [c] "^(3cos(alpha+beta+gamma))quad [D]^(3)sin(alpha+beta+gamma)],[" (55) "Delta ABC" भi "a sin(B-C)+b sin(C-A)+c sin(A-B)=......],[quad *]

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If cos (alpha + beta) sin (gamma + delta) = cos (alpha - beta) sin (gamma - delta) then:

If cos alpha + cos beta + cos gamma = 3 then sin alpha + sin beta + sin gamma =

cos (alpha + beta) cos gamma-cos (beta + gamma) cos alpha = sin beta sin (gamma-alpha)

cos alpha sin (beta-gamma)+cos beta sin (gamma-alpha) +cos gamma(sin alpha-beta)=

cos alpha sin (beta-gamma) + cos beta sin (gamma-alpha) + cos gamma sin (alpha-beta) =

cos alpha * sin (beta - gamma ) + cos beta * sin ( gamma - alpha ) + cos gamma * sin ( alpha - beta )=

If cos alpha + cos beta + cos gamma =3 , " then " sin alpha + sin beta + sin gamma =

cos alpha sin (beta-gamma) + cos beta sin (gamma-alpha) + cos gamma sin (alpha-beta)=

If sin alpha+ sin beta+ sin gamma=3, then sin^3alpha+sin^3beta+sin^3 gamma=