1.

The system of equations (sin 3 theta) x - y+z=0,(cos 2 theta)x+4y+3z=0, 2x+7y+7z=0 has non trivial solutions if

Answer»

`n PI +(-1)^(n)pi//6, AA n in Z`
`n pi+(-1)^(n) pi//3, AA n in Z`
`n pi+(-1)^(n)pi//9, AA n in Z`
`n pi +(-1)^(n)(pi)/12, AA n in Z`

ANSWER :A


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