Question

logtan5°+logtan25°+logtan65°+logtan85°​

Answer 1

Answer:

Given

logtan5°+logtan25°+logtan65°+logtan85°​

So,

=Logtan5 x tan25 x tan65 x tan85

=log 1  x 1                           {tan85 x 5=1,tan25 x 65=1}

=0                                        {log1=0}

Hope u got ur answer