题目
一道英文数学题目(追加10分)
In priates of the caribbean, a cannon was fired at an enemy ship. The muzzle velocity was 60m/s. At what angle above the horizontal must the cannon have been aimed in order to hit the enemy ship 320 m away?(Dont worry about intial height on this one. The ships will be at the same level due to calm seas)
我用算式y=-4.9t^2+60sin(theta)t 和x=60 cos(theta)t 然后设320=60 cos(theta)t 然后我知道要用sin theta/cos theta 但是怎么做呢?
In priates of the caribbean, a cannon was fired at an enemy ship. The muzzle velocity was 60m/s. At what angle above the horizontal must the cannon have been aimed in order to hit the enemy ship 320 m away?(Dont worry about intial height on this one. The ships will be at the same level due to calm seas)
我用算式y=-4.9t^2+60sin(theta)t 和x=60 cos(theta)t 然后设320=60 cos(theta)t 然后我知道要用sin theta/cos theta 但是怎么做呢?
提问时间:2020-11-30
答案
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
1,人们染上烟瘾,最终因吸烟使自己丧命.
最新试题
- 1从与世长辞,横行霸道,慷慨激昂,载歌载舞,负隅顽抗,嗷嗷待哺,寥寥无几,惴惴不安中选几个造句
- 2love is an are of endless forgiveness ,a tender look which becomes a habit.
- 3电阻上标了一个OR是什么意思
- 4定语从句中“介词+which/whose+名词”结构具体怎么用?什么情况下“介词+关系词”中的介词必须在关系词前
- 5香蕉球为什么与空气方向相反的一边流速大
- 6再富也要穷孩子中的穷的意思是什么
- 7在小于平角的范围内,用一对通常的三角板能画出确定数的角有几个?
- 8一元一次方程怎么做举个例子
- 9文章《蝉的音乐》中蝉靠什么来唱歌?蝉为了满足音乐嗜好牺牲了什么?蝉歌唱的目的是什么?我发现蝉的歌唱不是在喊同伴的原因是什么?
- 10位移与加速度关系
热门考点