Ruby 我来发个简单问题 - Ruby 怎么求反正弦

themorecolor · September 28, 2013 · Last by luikore replied at September 28, 2013 · 2385 hits

不知道叫什么了

知道 sin(x) 的值

怎么求 X X 单位是度数 asin 好像不对啊

luikore #1 September 28, 2013

结果单位是弧度，转成角度即可

Math.asin(0.5) * 180 / Math::PI

2 likes

themorecolor #2 September 28, 2013

#1 楼 @luikore 谢谢了好速度我刚查出来好绕

lgn21st #3 September 28, 2013

#1 楼 @luikore 不愧是学物理的！

luikore #4 September 28, 2013

#3 楼 @lgn21st 学物理的才不求反正弦呢，直接把方程扔给 mathematica 找结果了... 也才不会用角度这种玛雅人单位制呢...

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