sin² (π+α)-cos(π-α)sin(3/2π + α)+1sin² (π+α)-cos(π-α)sin(3/2π + α)+1的值是A.1 B.-1 C.0 D.2
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![sin² (π+α)-cos(π-α)sin(3/2π + α)+1sin² (π+α)-cos(π-α)sin(3/2π + α)+1的值是A.1 B.-1 C.0 D.2](/uploads/image/z/1746961-25-1.jpg?t=sin%26%23178%3B+%28%CF%80%2B%CE%B1%29-cos%28%CF%80-%CE%B1%29sin%283%2F2%CF%80+%2B+%CE%B1%29%2B1sin%26%23178%3B+%28%CF%80%2B%CE%B1%29-cos%28%CF%80-%CE%B1%29sin%283%2F2%CF%80+%2B+%CE%B1%29%2B1%E7%9A%84%E5%80%BC%E6%98%AFA.1+B.-1+C.0+D.2)
sin² (π+α)-cos(π-α)sin(3/2π + α)+1sin² (π+α)-cos(π-α)sin(3/2π + α)+1的值是A.1 B.-1 C.0 D.2
sin² (π+α)-cos(π-α)sin(3/2π + α)+1
sin² (π+α)-cos(π-α)sin(3/2π + α)+1的值是
A.1 B.-1 C.0 D.2
sin² (π+α)-cos(π-α)sin(3/2π + α)+1sin² (π+α)-cos(π-α)sin(3/2π + α)+1的值是A.1 B.-1 C.0 D.2
sin² (π+α)-cos(π-α)sin(3/2π + α)+1
=sin² (α)-cos(α)cos(π + α)+1
=sin² (α)-cos²(α)+1
结果和α相关