题目

I’m writing this article in China, far away from my home in the United States. You might wonder what I do to remember my mom on Mother’s Day. Well, I certainly call her to say “Happy Mother's Day” and promise that I will visit home soon. I still remember the first time I forget Mother’s Day. When I finally figured it out, I asked, “Why does mom get a special holiday? Why isn’t there a Children’s Day for us? My mom explained, in that way that only moms seem to be able in explain, “Because every day is Children’s Day !” I knew that I had messed up. I thought about all the t如图，一艘海轮位于灯塔P的北偏东65°方向，距离灯塔80海里的A处，它沿正南方向航行一段时间后，到达位于灯塔P的南偏东34°方向上的B处，这时，海轮所在的B处距离灯塔P有多远？（精确到1海里，参考数据：cos25°≈0.91，sin25°≈0.42，tan25°≈0.47，sin34°≈0.56，cos34°≈0.83，tan34°≈0.67）