高中數學主題練習—使用三角函數求三角形面積。


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<h2 class="lexical__h2" dir="ltr"><span style="white-space: pre-wrap;">請使用Sin函數三角形面積公式，回答下列各題：</span><br></h2><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://d2a6d2ofes041u.cloudfront.net/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F0fdc3654-33ad-43fd-befe-1fee3a96ffc3.png&amp;width=740&amp;sign=NoOqzgWIIbN5fNhdNHhEsGIDbPgjreZlI0VUDkjfApQ" data-src="https://d2a6d2ofes041u.cloudfront.net/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F0fdc3654-33ad-43fd-befe-1fee3a96ffc3.png&amp;width=740&amp;sign=NoOqzgWIIbN5fNhdNHhEsGIDbPgjreZlI0VUDkjfApQ" class="lazy" data-original-src="https://images.vocus.cc/0fdc3654-33ad-43fd-befe-1fee3a96ffc3.png" data-lowquality="true" data-width="1476" data-height="908" onerror="this.onError=null;this.src=this.dataset.originalSrc;" alt="raw-image"></div><div></div></div><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://d2a6d2ofes041u.cloudfront.net/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fc7e6d652-28b8-46b8-8464-81e92cac1b16.png&amp;width=740&amp;sign=sClobtmYS5xt8QN7c2087xiQfeuku7NQ303_MWUvXq8" data-src="https://d2a6d2ofes041u.cloudfront.net/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fc7e6d652-28b8-46b8-8464-81e92cac1b16.png&amp;width=740&amp;sign=sClobtmYS5xt8QN7c2087xiQfeuku7NQ303_MWUvXq8" class="lazy" data-original-src="https://images.vocus.cc/c7e6d652-28b8-46b8-8464-81e92cac1b16.png" data-lowquality="true" data-width="1476" data-height="598" onerror="this.onError=null;this.src=this.dataset.originalSrc;" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><p class="lexical__paragraph"><br></p><p class="lexical__paragraph"><br></p><hr><h2 class="lexical__h2" dir="ltr"><b><strong class="lexical__textBold" style="white-space: pre-wrap;">解答：</strong></b></h2><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://d2a6d2ofes041u.cloudfront.net/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F9dfee89a-f93d-4515-be68-e16e180fb135.png&amp;width=740&amp;sign=qrxiSZ--b5k9PxgvpZDXFe1ntLzekrsWQ7sE5E-qAvs" data-src="https://d2a6d2ofes041u.cloudfront.net/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F9dfee89a-f93d-4515-be68-e16e180fb135.png&amp;width=740&amp;sign=qrxiSZ--b5k9PxgvpZDXFe1ntLzekrsWQ7sE5E-qAvs" class="lazy" data-original-src="https://images.vocus.cc/9dfee89a-f93d-4515-be68-e16e180fb135.png" data-lowquality="true" data-width="1476" data-height="436" onerror="this.onError=null;this.src=this.dataset.originalSrc;" alt="raw-image"></div><div></div></div>

請使用Sin函數三角形面積公式，回答下列各題：

三角形面積—藉三角函數（一）

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