If `alpha+beta+gamma=2pi` then

If alpha+beta+gamma=2 pi, then

If alpha+beta-gamma=pi , then sin^(2)alpha=sin^(2)beta-sin^(2)gamma is equal to

If alpha+beta-gamma=pi , then sin^2alpha+sin^2beta-sin^2gamma=

If alpha + beta + gamma=pi, then the value of sin ^(2) alpha + sin ^(2) beta - sin^(2) gamma is equal to

If alpha + beta - gamma =pi, then sin ^(2) alpha + sin^(2) beta- sin ^(2) gamma=

If alpha+beta+gamma=2pi and x+(cosbeta)y+(cosgamma)z=0 , (cosbeta)x+y+(cos alpha)z=0 (cosgamma)x+(cos alpha)y+z=0 then no. of solutions are