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B
1
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C
2
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D
3
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Solution
The correct option is A 0.0 log10[tan1∘.tan2∘…tan44∘tan45∘tan46∘…tan89∘] =log10[(tan1∘.tan89∘)…tan45∘] =log10[(tan1∘.cot1∘)…tan45∘] =log101=0[∵tan1∘.cot1∘=1]