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化简:(1+tan1°)(1+tan2°)…(1+tan44°)=.
题目详情
化简:(1+tan1°)(1+tan2°)…(1+tan44°)= ___ .
▼优质解答
答案和解析
(1+tan1°)(1+tan2°)…〔1+tan44°)
=[(1+tan1°)(1+tan 44°〕][(1+tan2°)(1+tan 43°〕]…[(1+tan22°)(1+tan 23°〕]
=[(1+
)(1+tan 44°〕][(1+
)(1+tan 43°〕]…[(1+
)(1+tan 23°)]
=2×2…2×2
=222,
故答案为:222.
=[(1+tan1°)(1+tan 44°〕][(1+tan2°)(1+tan 43°〕]…[(1+tan22°)(1+tan 23°〕]
=[(1+
1-tan44° |
1+tan44° |
1-tan43° |
1+tan43° |
1-tan23° |
1+tan23° |
=2×2…2×2
=222,
故答案为:222.
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