高中數學主題練習—三角函數值計算，包含Sin、Cos、Tan

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三角函數值（一）

<h2 class="lexical__h2" dir="ltr"><span style="white-space: pre-wrap;">請回答下列各題：</span></h2><p class="lexical__paragraph"><br></p><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F578168c7-3df9-4904-90e1-b480d7e8b731.png&amp;width=740&amp;sign=Qv8Udf-p-EERAieeoQ63MJ8g0W_AeE-vhHMh6mN-vqE" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F578168c7-3df9-4904-90e1-b480d7e8b731.png&amp;width=740&amp;sign=Qv8Udf-p-EERAieeoQ63MJ8g0W_AeE-vhHMh6mN-vqE" data-loaded="true" data-original-src="https://images.vocus.cc/578168c7-3df9-4904-90e1-b480d7e8b731.png" data-lowquality="false" data-width="1476" data-height="1320" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><p class="lexical__paragraph"><div class="ad-placeholder" style="min-height: 124px;"></div><br></p><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F8ed1239c-b176-42e7-9221-028a14b55cf5.png&amp;width=740&amp;sign=fb-J5tzKbSeklbpVzGkBRGBdynK7P9K06j8nxI1LUsg" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F8ed1239c-b176-42e7-9221-028a14b55cf5.png&amp;width=740&amp;sign=fb-J5tzKbSeklbpVzGkBRGBdynK7P9K06j8nxI1LUsg" data-loaded="true" data-original-src="https://images.vocus.cc/8ed1239c-b176-42e7-9221-028a14b55cf5.png" data-lowquality="false" data-width="1476" data-height="1490" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><p class="lexical__paragraph"><br></p><p class="lexical__paragraph" dir="ltr"><br></p><p class="lexical__paragraph"><br></p><hr><h2 class="lexical__h2" dir="ltr"><span style="white-space: pre-wrap;">解答：</span></h2><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F79b1c3cd-c8da-4e00-819b-c87564d8468f.png&amp;width=740&amp;sign=cdzSKUPt-DanO2tjlrM-5Z9cVNGRa6negDMN3s1XNA4" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F79b1c3cd-c8da-4e00-819b-c87564d8468f.png&amp;width=740&amp;sign=cdzSKUPt-DanO2tjlrM-5Z9cVNGRa6negDMN3s1XNA4" data-loaded="true" data-original-src="https://images.vocus.cc/79b1c3cd-c8da-4e00-819b-c87564d8468f.png" data-lowquality="false" data-width="1476" data-height="868" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><p class="lexical__paragraph" dir="ltr"><br></p><p class="lexical__paragraph" dir="ltr"><br></p>