Question
Sat May 31, 2008 By:

the value of cot 16 cot 44 + cot 44 cot 76 - cot 76cot 16 - 3 is

Expert Reply
Sun August 10, 2008

cot(a) cot(b) -1 = cot(a+b)*( cot(a)+cot(b) )

cot(a) cot(b) +1 = cot(a-b)*( cot(b)-cot(a) )

using these two formulas u can easily get the answer.

which is 0

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