If `sin alpha, sin beta, sin gamma` are in AP then `cos alpha, cos beta , cos gamma` are in GP then `(cos^2alpha+cos^2 gamma-4cosalphacosgamma)/(1-sin alphasin gamma)=`

If sin alpha, sin beta, sin gamma are in AP and cos alpha, cos beta, cos gamma are in GP, then the value of (cos^(2)alpha+cos^(2)gamma+4 cos alpha cos gamma-2 sin alpha sin gamma-2)/(1-2 sin^(2)beta) , where beta != (pi)/(4) , is equal to

If sin alpha, sin beta, sin gamma are in AP and cos alpha, cos beta, cos gamma are in GP , then the value of (cos^(2)alpha+cos^(2)gamma+4 cos alpha cos gamma-2 sin alpha sin gamma-2)/(1-2 sin^(2)beta) , where beta != (pi)/(4) , is equal to

If sin alpha + sin beta + sin gamma =3, then the value of (cos alpha + cos beta+ cos gamma) is-

lfsin alpha + sin beta + sin gamma = 0 = cos alpha + cos beta + cos gamma then sum cos (alpha-beta) =

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

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

If alpha , beta , gamma in [0,pi] and if alpha , beta , gamma are in A.P then ( sin alpha - sin gamma)/( cos gamma -cos alpha) is equal to

If alpha, beta, gamma in [0, pi]"and if" alpha, beta, gamma are in AP, then (sin alpha - sin gamma)/(cos gamma - cos alpha) is equal to

If sin alpha + sin beta +sin gamma=0 =cos alpha+cos beta+cos gamma=0 "Show that" sin^2 alpha+sin^2beta+sin^2gamma=cos^2 alpha+ cos^2beta+cos^2gamma=3/2