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The least value of 6tan^2varphi+54cot^2v...

The least value of `6tan^2varphi+54cot^2varphi+18` is `(I)`54 when `A.M.geq GM`. Is applicable for `6tan^2varphi,54cot^2varphi,18` `(II)`54 when `A.M.geq GM`. Is applicable for `6tan^2varphi,54cot^2varphi` and18 is added further `(III)`78 when `tan^2varphi=cot^2varphi` `(IV)` none

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