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" 8.यदि "sin B=(1)/(2)," सिद्ध कीजिए: "3...

" 8.यदि "sin B=(1)/(2)," सिद्ध कीजिए: "3cos B-4cos^(3)B=0

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ig sin B=(1)/(2) then prove that 3cos B-4cos^(3)B=0

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If 0

If 0