sin2x+cos2x=根号2sin(2x+pi/4)函数y=cos(x-pai/8)x取2/3pai取最小值y=cos(2/3pai-pai/8)=y=cos(13/24pai)=cos(1/2pqi-1/24pai）=sin（1/24pai）=sin（7.5度）计算这个建议用计算机
1.化简：sin2x+cos2x
1个回答
相关问题
-
化简cos2(x)/1+sin(x) +sin2(x)/1+cos(x)
-
化简1—-cos(2X)+sin(2X)
-
化简cos3/2x*sin3/2x-cos1/2x*sin1/2x
-
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
-
化简(cos2x-sin2x)/(1-cos2x)(1-tan2x)
-
化简sin(x)cos(x)cos(2x)
-
化简f(x)=(1+cos2x)sin^2x
-
化简(1+sin2a-cos2a)/(1+sin2a+cos2a) f(x)=根号(1+x) 化简f(sin2)-f(-
-
化简：(1/sin^2(x))+ (1/cos^2(x))等于
-
化简sin2x+cos2x