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सिद्ध कीजिए कि sqrt(2+sqrt(2+sqrt(2+...

सिद्ध कीजिए कि
` sqrt(2+sqrt(2+sqrt(2+2cos 8A)))= 2 cos A `

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sqrt(2+sqrt(2+sqrt(2+2cos8A)))=2cosA

intsqrt(2+sqrt(2+sqrt(2+2cos8x)))dx=

sqrt(2+sqrt(2+sqrt(2+2 cos 8 theta)))=

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sqrt(2+sqrt(2+2cos4 theta))

sqrt(2+sqrt(2+2cos4theta))=

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What is sqrt(2+sqrt(2+sqrt(2+2cos4A))) equal to ?

Show that sqrt(2+sqrt(2+sqrt(2+2cos 8theta)))=2cos theta