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Prove that,16 "cos" (2pi)/15 "cos" (4pi)...

Prove that,`16 "cos" (2pi)/15 "cos" (4pi)/15 "cos" (8pi)/15 "cos" (16pi)/15 =1`

Text Solution

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The correct Answer is:
`1/sin theta sin theta = 1 = R.H.S.`
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