[問題] 太陽反射問題
假使太陽在下午三點
會有一個方位角及高度角
現在我要利用反射板反射
反射板面積為122*61
想請教各位
當反射板為不同角度時
所反射出來的面積要怎麼去算
目前只知道反射出來的面積大概為一個平行四邊形
可是不知道要怎麼去求平行四邊形的高
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