" (i) "sin^(2)135^(@)+cos^(2)120^(@)-sin^(2)120^(@)+tan^(2)150^(@)

tan^(2)120^(@)+cos^(2)150^(@)-sin^(2)300^(@)

|{:(sin^(2)13^(@),sin^(2)77^@,tan135^(@)),(sin^(2)77^(@), tan 135^(@),sin^(2)13^(@)),(tan135^(@),sin^(2)13^(@),sin^(2)77^(@)):}|=

sin120^(@)cos150^(@)-cos240^(@)sin330^(@)

If x cot^(2)120^(@)+4sin^(2)150^(@)=3, then x=

The value of the determinant : |(sin^(2)13^(@)""sin^(2)77^(@)""tan135^(@)),(sin^(2)77^(@)""tan135^(@)""sin^(2)13^(@)),(tan135^(@)""sin^(2)13^(@)""sin^(2)77^(@))| is equal to :

sin120^(@)cos150^(@)-cos240^(@)sin330^(@)=

sin 120^(@) cos 150^(@)- cos 240^(@) sin 330^(@) =

sin 120^(@) cos 150^(@)- cos 240^(@) sin 330^(@) =

The value of the determinant |("sin"^(2)36^(@),"cos"^(2)36^(@),"cot"135^(@)),("sin"^(2)53^(@),"cot"135^(@),"cos"^(2)53^(@)),("cot"135^(@),"cos"^(2)25^(@),"cos"^(2)65^(@))| is