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If cottheta+tantheta=m and sectheta-cost...

If `cottheta+tantheta=m and sectheta-costheta=n` then (i) `sintheta costheta=-m` (ii)`sintheta tantheta=-n` (iii) `(m^2n)^(2/3)-(mn^2)^(2/3)=1` (iv) `(m^2n)^(1/3)+(xy^2)^(1/3)=1`

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