[" 19."(1-cot200^(@))(1-cot25^(@))=],[" 1) "0," 2) "1quad " 3) "2]

cot((pi)/(4)-2cot^(-1)3)

cot((pi)/4-2cot^(-1)3)=

If (1-cot 1^(@))*(1-cot2^(@))*(1-cot3^(@))...(1-cot44^(@))=2^(n) , then (n)/(11) is equal to

If (1-cot 1^(@))*(1-cot2^(@))*(1-cot3^(@))...(1-cot44^(@))=2^(n) , then (n)/(11) is equal to

cot15^(0)+cot75^(0)+cot315^(0)= a)1 b)0 c)1/2 d)3

Find- cot^(-1)1+cot^(-1)2+cot^(-1)3

cot^(-1)(-1/2)+cot^(-1)(-1/3) is equal to

cot^(-1)(-1/2)+cot^(-1)(-1/3) is equal to

The value of (1-cot2^(0))(1-cot5^(0))(1-cot11^(0))(1-cot34^(0))(1-cot40^(@))(1-cot43^(0))(1+cot45^(@)) is