UC知道数学问题，谁计算nb帮算下..
来源：百度知道 编辑：UC知道 时间：2024/05/25 00:14:06
1.
X1 + Y1 = 90du
n1 = 1.00
n2 = 1.33
n1sin(X1) = n2sin(X2)
n1sin(Y)=n2sin(90 - Y) = n2cos(Y)
Y = arctan(n2/n1)
Y = ???
2.
X1 + Y1 = 90du
n1 = 1.33
n2 = 1.00
n1sin(X1) = n2sin(X2)
n1sin(Y)=n2sin(90 - Y) = n2cos(Y)
Y = arctan(n2/n1)
Y = ???
X1 + Y1 = 90du
n1 = 1.00
n2 = 1.33
n1sin(X1) = n2sin(X2)
n1sin(Y)=n2sin(90 - Y) = n2cos(Y)
Y = arctan(n2/n1)
Y = ???
2.
X1 + Y1 = 90du
n1 = 1.33
n2 = 1.00
n1sin(X1) = n2sin(X2)
n1sin(Y)=n2sin(90 - Y) = n2cos(Y)
Y = arctan(n2/n1)
Y = ???
题目有问题吧？如果题目没错的话 Y = arctan(n2/n1）=arctan（1.33/1）=arctan（4/3） 剩下的没什么好算的啦，自己划一个边长分别为 3，4，5 的直角三角形 ，边长为4的边对的角就是Y啦。