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[" व) यदि "cos theta+sin theta=sqrt(2)co...

[" व) यदि "cos theta+sin theta=sqrt(2)cos theta," तो सिद्ध कीजिए कि "],[cos theta-sin theta=sqrt(2)sin theta]

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If cos theta+sin theta=sqrt(2)cos theta, then prove that cos theta-sin theta=sqrt(2)sin theta

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