如图,在正方形ABCD中,P,Q分别在BC,CD上,且
,利用两角和(差)的正切公式证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7a1488c16cb30a6409c6b35de15d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e13889db9188c455a3ac91f2f32cf7.png)
20-21高一·全国·课后作业 查看更多[2]
更新时间:2021-11-11 21:44:31
|
【知识点】 用和、差角的正切公式化简、求值解读
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】已知
.
(1)若
为锐角,求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d850f7fcf10f4793ccfed1fee0a5567.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95fa17ea94a6c12bd8cc013d1fb9047.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03eb60a216b4387ff8659eeb3be358af.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】已知
,
为锐角,
,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db73deb6fa502e49e3c873ef076fbc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710be94194896bce781527e733acb362.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912fb97c4905890ef305f3572ff044a8.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d75442a901f013aeb5c52a7113ae9b9.png)
您最近一年使用:0次