高考數(shù)學(xué)專題復(fù)習(xí)導(dǎo)練測 第四章 三角函數(shù)、解三角形階段測試(六)課件 理 新人教A版.ppt
,數(shù)學(xué) A(理),第四章 三角函數(shù)、解三角形,45分鐘階段測試(六),2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,10,1,答案 C,3,4,5,6,7,8,9,10,1,2,又A為三角形的內(nèi)角,A30.,A,2,4,5,6,7,8,9,10,1,3,3.設(shè)ABC的內(nèi)角A、B、C所對的邊分別為a、b、c,若三邊的長為連續(xù)的三個正整數(shù),且ABC,3b20acos A,則sin Asin Bsin C為( ) A.432 B.567 C.543 D.654,2,4,5,6,7,8,9,10,1,3,2,3,5,6,7,8,9,10,1,4,2,3,5,6,7,8,9,10,1,4,答案 C,2,3,4,6,7,8,9,10,1,5,2,3,4,6,7,8,9,10,1,5,2,3,4,5,7,8,9,10,1,6,2,3,4,5,6,8,9,10,1,7,2,3,4,5,6,8,9,10,1,7,2,3,4,5,6,9,10,1,7,8,2,3,4,5,6,7,8,10,1,9,2,3,4,5,6,7,8,10,1,9,2,3,4,5,6,7,8,10,1,9,2,3,4,5,6,7,8,10,1,9,2,3,4,5,6,7,8,9,1,10,2,3,4,5,6,7,8,9,1,10,2,3,4,5,6,7,8,9,1,10,2,3,4,5,6,7,8,9,1,10,