高中数学学习材料(灿若寒星精心整理制作)《同角基本关系、诱导公式》测试题1.sin210°的值是()A21B21C23D232.sin(-6π19)的值是()A.21B.-21C.23D.-233.若31)πsin(A,则)6sin(A的值为()A31B31C322D3224.已知)2π3,π(,31)2πsin(,则)3sin(的值为()A31B31C322D3225.设tan=2,且sin<0,则cos的值等于()A55B51C55D516.若510)cos(,且)0,2π(,则)23tan(的值为()A.36B.36C.26D.267.化简)2πcos()2πsin(21的结果是()Asin2-cos2Bcos2+sin2C±(sin2-cos2)Dsin28.设A、B、C是三角形的三个内角,下列关系恒成立的是()A.cos(A+B)=cosCB.sin(A+B)=sinCC.tan(A+B)=tanCD.sin2BA=sin2C9.如果|cosx|=cos(x+π),则x的取值集合是()A.-2π+2kπ≤x≤2π+2kπB.-2π+2kπ≤x≤2π3+2kπC.2π+2kπ≤x≤2π3+2kπD.(2k+1)π≤x≤2(k+1)π(以上k∈Z)10.sin21°+sin22°+sin23°+⋯+sin289°=_________..11.)22πcos()2πsin(的值为__________12.)210cos()210tan(=__________.13.设2cossin,则cossin的值为___14.π23π,31tan,则cossin的值为______.15.计算:π655tanπ637cos)π346sin()π635tan(16.化简)π5sin()πcos()π6cos()π2sin()π2tan(