[" If "cos alpha,cos beta" and "cos gamma" are the direction cosines of a line,then the value "],[" of "sin^(2)alpha+sin^(2)beta+sin^(2)gamma]

If cos alpha, cos beta, cos gamma are the direction cosines of a line then the value of sin^(2) alpha + sin^(2) beta + sin^(2) gamma is__________

If cos alpha , cos beta, cos gamma are the direction-cosines of a line, then the value of sin^2alpha + sin^2 beta + sin^2gamma =

If cos alpha,cos beta,cos gamma are the direction cosine of a line,then find the value of cos^(2)alpha+(cos beta+sin gamma)(cos beta-sin^(2)gamma

If alpha, beta , gamma are angles of a triangle then the value of (sin^(2) alpha + sin ^(2) beta+sin ^(2) gamma-2 cos alpha cos beta cos gamma) is-

cos alpha+cos beta+cos gamma=0sin alpha+sin beta+sin gamma=0 then the value of sin^(4)alpha+sin^(4)beta+sin^(4)gamma

If sin alpha+sin beta+sin gamma=0=cos alpha+cos beta+cos gamma, then the value of sin^(2)alpha+sin^(2)beta+sin^(2)gamma, is