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【331368】28.1 第4课时 用计算器求锐角三角函数值及锐角

时间:2025-02-03 19:13:33 作者: 字数:526字
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281锐角三角函数

4课时 用计算器求锐角三角函数值及锐角

1.利用计算器求下列各式的值:

(1)  <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(2) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(3)  <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(4) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

2.利用计算器求下列各式的值:

(1) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(2) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

  1.  <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(4) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

3.利用计算器求下列各式的值:

(1) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(2) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(3) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

(4) <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>

4.如图,甲、乙两建筑物之间的水平距离为100 m,∠α32°,∠β50°,求乙建筑物的高度(结果精确到0.1 m)


 <a href="/tags/16/" title="课时" class="c1" target="_blank">课时</a> <a href="/tags/179/" title="锐角" class="c1" target="_blank">锐角</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> <a href="/tags/920/" title="三角" class="c1" target="_blank">三角</a> <a href="/tags/944/" title="三角函数" class="c1" target="_blank">三角函数</a> <a href="/tags/1833/" title="函数值" class="c1" target="_blank">函数值</a>