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" A "$(x+8)cosec theta+cot theta=k cos6c...

" A "$(x+8)cosec theta+cot theta=k cos6cos theta=(k^(2)-1)/(k^(2)+1)" acos and? "

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If cos ec theta+cot theta=k then prove that cos theta=(k^(2)-1)/(k^(2)+1)

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If cosec theta+cot theta =k" then "cos theta =………….

( 1 + cos theta) ( 1 - cos theta ) cosec^2 theta =

csc theta(1+cos theta)(csc theta-cot theta)=1