1.

The roots of the equation |(3x^(2),x^(2) + x cos theta + cos^(2) theta ,x^(2) + x sin theta + sin^(2) theta),(x^(2) + x cos theta + cos^(2) theta,3 cos^(2) theta,1 + (sin 2 theta)/(2)),(x^(2) + x sin theta + sin^(2) theta,1 + (sin 2 theta)/(2),3 sin^(2) theta)| = 0

Answer»

`SIN THETA, COS theta`
`sin^(2) theta, cos^(2) theta`
`sin theta, cos^(2) theta`
`sin^(2) theta, cos theta`

ANSWER :A


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