In triangle A B C , if cotA ,cotB ,cotC ...

In triangle `A B C ,` if `cotA ,cotB ,cotC` are in `AdotPdot,` then `a^2,b^2,c^2` are in ____________ progression.

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The correct Answer is:

`i.e. a^(2),b^(2), c^(2)` are in AP.

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