The value of ` cot 5^0 cot10^0...... cot85^0` is

The value of cot70^0+4cos70^0 is

The value of cot5^(@)cot10^(@) …………. cot85^(@) is …………

The value of cot 5^(@).cot 10^(@).cot 15^(@)……cot 85^(@) is

The value of cot 5^(circ) . cot 10^(circ) .. . cot 85^(circ) is

The value of cot5^(@)*cot15^(@)* cot 25^(@)* cot 35^(@)* cot45^(@) * cot 55^(@) * cot65^(@) * cot 75^(@) * cot 85^(@) is ________

The value of (tan55^0)/(cot35^0)+cot1^0cot2^0cot3^0cot90^0,i s -2 (b) 2 (c) 1 (d) 0

The value of cot10^@ cot20^@ cot60^@ cot 70^@ cot 80^@ is

cot 6^0 cot 42^0 cot 66^0 cot 78^0=1

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