help me please asap ༼;´༎ຶ ༎ຶ༽
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Answer:
if you know the height of the first floor, you can measure the depression angle of the bottom of the second floor from the top of the first floor and evelation angle of the top of the second floor, so you can find out the height of the second floor.
Explanation:
this question can use sine and cosine laws