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Show that,32 sin^(6) theta = 10 - 15 cos...

Show that,`32 sin^(6) theta = 10 - 15 cos 2 theta + 6 cos 4 theta - cos 6 theta`

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The correct Answer is:
`= 10 - 15 cos 2 theta + 6 cos 4 theta - cos 6theta = R.H.S.`
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