Question

Value of cot10.cot30.cot 80 is ??

Answer 1

Answer:

see the attached image

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Answer 2

Answer:

it is √3

Step-by-step explanation:

cot 10. cot 30. cot 80

cot(90-10).cot 30 cot 80

tan 80. cot 80.cot 30

1÷ cot 80. cot 80.cot30

cot 30=√3

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