(sin ^(3) theta - cos^(3) theta)/(sin th...

`(sin ^(3) theta - cos^(3) theta)/(sin theta - cos theta) - (cos theta)/(sqrt(1 + cot^(2)theta))-2 tan theta cot theta = - 1` , if

A

`theta in (0, pi//2)-{pi//4}`

B

`theta in ((pi)/(2),pi)-{3pi//4}`

C

`theta in (pi, (3pi)/(2))-{5pi//4}`

D

`theta in (0, pi) - {pi//4, pi//2}`

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The correct Answer is:

D

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