一道英文的数学题…… 没看懂

分类: 作业答案 • 2021-12-31 22:47:37

问题描述：

一道英文的数学题…… 没看懂
A child swings back and forth,reaching a maximum angle of 32° with the vertical.
The swing is 3.4 m long and 0.75 m from the ground when at rest.
What maximum height above the ground does the child reach.
“The swing is 3.4 m long and 0.75 m from the ground when at rest.”