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娃友们来做题了

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魔丶天龍   当前离线
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魔丶天龍

2024-03-13 只看楼主
ignore_js_opimg id="aimg_4127271"src="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/41272710bdee46058e270f4b5933e5186e34cc1.jpg"style="max-width: 750px;"zoomfile="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/41272710bdee46058e270f4b5933e5186e34cc1.jpg"file="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/41272710bdee46058e270f4b5933e5186e34cc1.jpg"class="zoom"onclick="zoom(this, this.src)"onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"alt=""//ignore_js_op

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暮暮呀

7楼
2024-03-13 来自"傲世堂APP"
ignore_js_opimg id="aimg_4127288"src="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/41272882ff52226d3b6918f7df558193e0dbd85.jpg"style="max-width: 750px;"zoomfile="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/41272882ff52226d3b6918f7df558193e0dbd85.jpg"file="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/41272882ff52226d3b6918f7df558193e0dbd85.jpg"class="zoom"onclick="zoom(this, this.src)"onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"alt=""//ignore_js_op
 

laoaozi

6楼
2024-03-13 来自"傲世堂APP"
坐边sin(A+C)=sin(180-B)=sinB=2sinB/2cosB2,和右边约掉sinB/2,得cosB/2=4sinB/2,tanB/2=1/4,tanB=8/15,最后解cosB
 

stone君

5楼
2024-03-13 来自"傲世堂APP"
窝c
 

暮暮呀

4楼
2024-03-13 来自"傲世堂APP"
ignore_js_opimg id="aimg_4127284"src="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/4127284541c1fe50124094b9c3e37dd0e9db745.jpg"style="max-width: 750px;"zoomfile="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/4127284541c1fe50124094b9c3e37dd0e9db745.jpg"file="https://res-bbs.aoshitang.com/data/attachment/forum/202403/13/4127284541c1fe50124094b9c3e37dd0e9db745.jpg"class="zoom"onclick="zoom(this, this.src)"onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})"alt=""//ignore_js_op
 

嘿嘿嘿235

3楼
2024-03-13 来自"傲世堂APP"
高考送分题
 
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