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1 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f987c777f3aaf496edfe74674af627.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f987c777f3aaf496edfe74674af627.png)
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解题方法
2 . 已知角
的终边经过点
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f032f724621a450bfa4e1eff316b8bef.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554516a5ae7303967f3dd21ee0bd6e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992606728e61c234b0c0398f61e73a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f032f724621a450bfa4e1eff316b8bef.png)
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3 . 非零向量
,
,
,则
;( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bb74f8636fadd31c9b6ffdc35ea2ab.png)
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4 . 若
,则
;( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa8f7351f41cbfc74f99de51c752ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fbeefcb60bff9eab8243d3b4931123.png)
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5 .
,
为非零向量,若
,则
;( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19e9066e6ebe86de2108970c51a8b88.png)
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6 . 若
且
,则
是第二象限角._____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9ca2eae27f9c9fa26f375f92355a66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f962734976a33d51aa97ed5db5f309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe211e0dea7a44863e5e1706633c3aa.png)
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7 .
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e391cad20a6919177c658e40808b150.png)
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8 .
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c8c5e8e2ffca2898782901dbb5e4c4.png)
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9 .
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09fac5fd3f4219ba6fdcee0479563fa.png)
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10 . 已知扇形的周长是6,面积是2,则扇形的圆心角的弧度数α是1或4.( )
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