免费初中三角函数计算题100道
(1)sin 260°+cos 260 (2)o
o
45
sin 45
cos -tan450
(3)cos45°-sin30° (4)sin 2300+cos 2300
(5)tan45°-sin30°·cos60° (6) 0
20
230
tan 45cos
(7)2sin300-cos450 (6)sin600cos600 (8)2sin30°+3cos60°-4tan45°
(9)cos30°sin45°+sin30°cos45° (10)0
0045
tan 260tan 1
60sin --
(11)3cos30°+2sin45° (12)2sin300+3sin600-4tan450
(13)tan300sin450+tan600cos450 (14)00045tan 260tan 1
30sin --
(15)
_______60cot 45tan _______,60cos 30sin 0
000=+=+;
(16)?
-?+?+?-?30sin 30cos 30tan 41
45sin 60cos 22=________________
(17)0
00
045
tan 30tan 145tan 30tan ?-+
)60sin 45(cos 30sin 60
cos 2330cos 45sin 0
000
00---+
(19)sin 230°+cos 245°+2sin60°·tan45°; (20)22cos 30cos 60tan 60tan 30?+?
???
+ sin45°
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(40)sin45°+3tan30°+4cos30°
(41)cos260°-tan45°+sin60°·tan60°.
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