Value of cot10.cot30.cot 80 is ??
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see the attached image
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Answered by
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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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