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If cos theta - sin theta = (1)/(5), wher...

If `cos theta - sin theta = (1)/(5)`, where `0 lt theta lt (pi)/(4)`, then
`{:(,"Column I",,"Column II"),((A),(cos theta+sin theta)//2,(p),(4)/(5)),((B),sin2theta,(q),(7)/(10)),((C ),cos2theta,(r ),(24)/(25)),((D),cos theta,(s),(7)/(25)):}`

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The correct Answer is:
A-q; B-r; C-s; D-p
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