Answers

2014-06-22T13:42:33+05:30
Cot54/tan36 + tan20/cot70 -2tan45
=> cot(90-36)/tan36 + tan(90-70)/cot70 - 2
=> tan36/tan36 + cot70/cot70 - 2
=> 1+1-2
=> 0
1 1 1
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2014-06-22T13:48:15+05:30
cot54/tan36 + tan20/cot70 -2tan45
=> cot(90-36)/tan36 + tan(90-70)/cot70 - 2
=> 0
answer
3 2 3