Problems Description
<p style="color:#666666;font-family:Arial, 'Hiragino Sans GB', SimSun, 宋体, serif;background-color:#FFFFFF;text-indent:28px;"> <span style="font-family:宋体;color:#000000;font-size:14px;">从键盘输入一items角度值a,x为a对应的弧度值,编程求 </span><span style="color:#000000;font-size:14px;line-height:1.5;">y=|sin(x*x)| / (1-cos(x)) </span><span style="color:#000000;font-family:宋体;font-size:14px;line-height:1.5;">的值。注意定义圆周率常量PI为3.141592658979.</span> </p>
Input格式
一items实数,例如180
Output格式
一items实数,(例如输入180,输出为0.215151)
Sample
Sample Input 1
180
Sample Output 1
0.215151
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