中国大学MOOC: AutoLISP 语言中求180度的正弦值得表达式为:A.(sin 180) B.(sin 180.0) C.(sin 3.14) D.sin(180)
举一反三
- AutoLISP 语言中求180度的正弦值得表达式为:A.(sin 180) B.(sin 180.0) C.(sin 3.14) D.sin(180) A: 错 B: 错 C: 对 D: 错
- 用R程序编程求下列的值,正确的命令是 ( )[img=76x44]180398c776266cb.jpg[/img] A: (sin(50*180/pi))^2/(1+ sin(10*180/pi)) B: (sin(50*π/180))^2/(1+ sin(10*π/180)) C: sin(50)^2/(1+ sin(10)) D: (sin(50*pi/180))^2/(1+ sin(10*pi/180))
- 角度x=[30, 60, 90],计算其正弦函数的运算为 A: SIN(x*pi/180) B: SIN(x) C: sin(x) D: sin(x*pi/180)
- ∵sin30°=,sin210°=-,sin210°=sin(180°+30°)=-sin30°,sin45°=,sin225°=-,sin225°=sin(180°+45°)=-sin45°,猜想、推理知:当α为锐角时有sin(180°+α)=-sinα,由此可知:sin240°=[ ]A.-
- 【单选题】MATLAB 中,当x和y为向量时,表达式书写正确的是() A. (cos(abs(x+y))-sin(78*pi/180))./x ; B. (cos(abs(x+y))-sin(78*pi/180))/x ; C. (cos(abs(x+y))-sin(78))./x ; D. (cos(abs(x+y))-sin(78))/x ;