2020-2021學(xué)年山東省濱州市高三(上)期末數(shù)學(xué)試卷

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fx

nn342nnnn342nnnnn三填題共4?。?3Cyxe

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SABCDABCDO四解題共6小）172sinABC

bbcosCcosABbcos1c218{}SSS21{}2logaca

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11541154參考答案一單選題共8小題.{x10}{x4}MNA0

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2

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cabccabccab0C

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9四解題本共6小題共70分。答寫文說、明程演步。172sinABC

bbcosCcosABbcos1c212sinABaba3b2c

9+42

ccosC0

absinCab+0233c22cos+cosB6bb

4+6ab+0233c222

4

nn342nnnnnnnnn342nnnnnnn3312413nn0sinB18{}SSS21{}2logaca

{}nT1{}nS23a+a++a+22aq22blognca+

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