计算: sin230+cos230-tan45 查看更多

 

题目列表(包括答案和解析)

计算:sin230°+2sin60°+tan45°-tan60°+cos230°.

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计算下列各题.
(1)sin230°+cos245°+
2
sin60°•tan45°;
(2)
cos230°+cos260°
tan60°•cot30°
+tan60°;
(3)tan2°tan4°•tan6°…tan88°.

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计算:sin230°+2sin60°+tan45-tan60°+cos230°=
 

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计算:
(1)(
5
-2)2+(
5
+1)(
5
+3)

(2)
2
+1
2
-1
×(2
2
-3)-(
1
3
)2×3

(3)sin230°+cos245°+
2
sin60°•tan45°;
(4)
cos230°+cos260°
tan60°•cot30°
+tan60°

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计算:
(1)(4
6
-4
1
2
+3
8
)÷2
2

(2)sin230°+cos230°+(1-tan45°)2010

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