已知
,
与
的夹角为
,设
.
(1)求
的值;
(2)若
与
的夹角是锐角,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da39efdb736a8cca9e8255db1209e939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99b4424387029e52affe63eb9265e17.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355fb84afd357e2b8f310dfcc1075aa6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
20-21高一下·安徽宣城·阶段练习 查看更多[6]
安徽省宣城六校2020-2021学年高一下学期第一次联考数学试题湖南省郴州市嘉禾县第一中学2020-2021学年高一下学期第二次月考数学试题(已下线)第6.2讲 平面向量的运算-2021-2022学年高一数学链接教材精准变式练(人教A版2019必修第二册)(已下线)6.2 平面向量的运算-2021-2022学年高一数学10分钟课前预习练(人教A版2019必修第二册)山西省孝义市2021-2022学年高一下学期第一次月考数学试题河南省省直辖县级行政单位济源市第四中学2022-2023学年高一下学期3月月考数学试题
更新时间:2021-12-09 12:31:25
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