文档介绍：中考数学初中三角函数计算题
三角函数值
三角函数
θ
30°
45°
60°
sinθ
cosθ
tanθ
1
sin260°+cos260 (2)-tan450
(3)cos45°-sin30° (4)sin2300+cos2300
(5)tan45°-sin30°·cos60° (6)
(7)2sin300-cos450 (6)sin600cos600 (8)2sin30°+3cos60°-4tan45°
(9)cos30°sin45°+sin30°cos45° (10)
cos30°+sin45° (12)2sin300+3sin600-4tan450
(13)tan300sin450+tan600cos450 (14)
(15);
(16)=________________
(18)
(19)sin230°+cos245°+sin60°·tan45°; (20)+ sin45°