1.

If sin^(3) theta cos theta - cos ^(3) theta sin theta = 1 //4 " then " theta =

Answer»

`THETA = (n PI)/( 2) + (pi)/(8) n in Z`
`theta = ( n pi)/(2) - (pi)/(8) n in Z`
`theta = (n pi)/(2) + (pi)/(4) n in Z`
`theta = (n pi)/(2) - (pi)/(4) n in Z`

Answer :B


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