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Show that: sin^(3) alpha + sin^(3) (120^...

Show that: `sin^(3) alpha + sin^(3) (120^(@) + alpha) + sin^(3) (240^(@) + alpha)= - 3/4 sin 3 alpha`

Text Solution

Verified by Experts

The correct Answer is:
`-3/4 sin alpha = R.H.S.`
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