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高二數(shù)學(xué)下冊(cè)復(fù)習(xí)

高二數(shù)學(xué)下冊(cè)復(fù)習(xí)，楂樹(shù)簩涓嬪唽鏁板閲嶇偣鐭ヨ瘑鐐更

2.楂樹(shù)簩涓嬪唽鏁板閲嶇偣鐭ヨ瘑鐐 1.涓囪兘鍏紡錛氫護(hù)tan(a/2)=tsina=2t/(1+t^2)cosa=(1-t^2)/(1+t^2)tana=2t/(1-t^2。2.杈呭姪瑙掑叕寮忥細(xì)asint+bcost=(a^2+b^2)^(1/2)sin(t+r)cosr=a

三、。三高一數(shù)學(xué)上下冊(cè)高二數(shù)學(xué)上下冊(cè)高三數(shù)學(xué)上下冊(cè)高考數(shù)學(xué)總

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