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在林林总总的问题中,我们常常能碰到以下两道习题: 例1 如图1所示,岸上人以速率v匀速收绳使船靠岸,当绳与水平方向成θ角时,船速为多少?
We can often encounter the following two problems in the foregone conclusion: Example 1 As shown in Fig. 1, shoremen pulled the rope at a constant speed and tied the rope to shore. When the rope makes an angle of θ with the horizontal, the speed of the ship is How many?