1 . 已知两点
、
,则过点
、
的直线的倾斜角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f64ce0cb15573f0e700e4891333b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69860b1897ea9cba40cb72a63def3673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
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解题方法
2 . 如图,在正三棱柱
中,
,
分别是
和
的中点,则直线
与
所成的角__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa3d0db9ad31d33c2883a6efed1dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/12d9f4f4-7bac-40b7-a098-a7fd43385df6.png?resizew=149)
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3 . 已知向量
,向量
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ead6bd699406b768d13b58ea738c2bb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b43696c9a728da4724975840b12cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d41dfcc3f362774214ff761f0a421e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ead6bd699406b768d13b58ea738c2bb.png)
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4 . 若直线l的一个方向向量
,则直线l的倾斜角是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55dbc8996c549df7c256fa24c473259a.png)
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5 . 直线
的倾斜角的大小为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9231260a2de7949154b7244bf70785c6.png)
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6 . 已知
,若
,用反正弦符号表示
为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d450aea0fb89e956fc4caa3a9c59fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04ca22dba343e23584976deeedf071f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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7 . 正四面体的棱长为a,则它的高为:_________ ,两个侧面形成二面角大小为:_________ .
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8 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb78931653279a0ff82fde55343a8a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffa28c7f519c1c85c0a3cad23b2e6cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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9 . 若
是三角形的一个内角,当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
______ 时,函数
取到最小值.(结果用反三角形式表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a0c2c08717d8c9de1971348ecf9e72.png)
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10 . 若
,
,则x可以用反正切表示为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5c7718e952772871957145a1154a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5cdde751120c6deab563a6f7f8cf05.png)
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