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If a sin^(3) theta + b cos^(3) theta = s...

If `a sin^(3) theta + b cos^(3) theta = sin^(3) theta * cos theta` and `a sin theta - b cos theta=0`, then prove that `a^(2)+b^(2)=1`.

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The correct Answer is:
`a^(2)+b^(2)=1`
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