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tan5/12派等于多少?
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tan5/12派等于多少?
▼优质解答
答案和解析
tan5/12派
=tan(π/4+π/6)
=(tanπ/4+tanπ/6)/(1-tanπ/4tanπ/6)
=(1+√3/3)/(1-√3/3)
=(3+√3)/(3-√3)
=(3+√3)²/(9-3)
=2+√3
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=tan(π/4+π/6)
=(tanπ/4+tanπ/6)/(1-tanπ/4tanπ/6)
=(1+√3/3)/(1-√3/3)
=(3+√3)/(3-√3)
=(3+√3)²/(9-3)
=2+√3
【中学生数理化】团队为您答题,
请点击下面的【选为满意回答】按钮.
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