If `alpha,beta,gammain[0,pi] and alpha,beta,gamma` are in AP, then `(sinalpha-singamma)/(cosgamma-cosalpha)` 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 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 are in A>P show that cot =(sinalpha-singamma)/(cosgammacosalpha)

If alpha,beta,gammain(0,pi/2) , then (sin(alpha+beta+gamma))/(sinalpha+sinbeta+singamma) is

If alpha,beta,gammain(0,pi/2) , then (sin(alpha+beta+gamma))/(sinalpha+sinbeta+singamma) is :

If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma then sin3alpha+sin3beta+sin3gamma=

If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma" then "sin3alpha+sin3beta+sin3gamma

If cosalpha+coabeta+cosgamma=0=sinalpha+sinbeta+singamma then cos(alpha+beta)+cos(beta+gamma)+cos(gamma+alpha)=

A line makes angles alpha,beta,gamma with the coordinate axes. If alpha + beta = pi//2 , then (cos alpha+cosbeta+cosgamma)^(2) is equal to