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log(tan3∘)+log(tan6∘)+log(tan9∘)+⋯+log(tan87∘)= ? \log (\tan 3^\circ) + \log(\tan 6^\circ) + \log(\tan 9^\circ) + \cdots + \log( \tan 87^\circ) = \, ? log(tan3∘)+log(tan6∘)+log(tan9∘)+⋯+log(tan87∘)=?
Clarification: 3, 6, 9,... 87 follows an arithmetic progression.
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