1.若函数f(x)=3sin(Wx+Y)对任意x都有:f(π/3+x)=f(π/3-x),则f(π/3)的值为?2.在三角形ABC中,若 a/cosA=b/cosB=c/cosC,则三角形ABC是()A.直角三角形 B.等边三角形 C.钝角三角形 D.等腰直角三角形3.在三角形ABC
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![1.若函数f(x)=3sin(Wx+Y)对任意x都有:f(π/3+x)=f(π/3-x),则f(π/3)的值为?2.在三角形ABC中,若 a/cosA=b/cosB=c/cosC,则三角形ABC是()A.直角三角形 B.等边三角形 C.钝角三角形 D.等腰直角三角形3.在三角形ABC](/uploads/image/z/3774916-28-6.jpg?t=1.%E8%8B%A5%E5%87%BD%E6%95%B0f%28x%29%3D3sin%28Wx%2BY%29%E5%AF%B9%E4%BB%BB%E6%84%8Fx%E9%83%BD%E6%9C%89%EF%BC%9Af%28%CF%80%2F3%2Bx%29%3Df%28%CF%80%2F3-x%29%2C%E5%88%99f%28%CF%80%2F3%29%E7%9A%84%E5%80%BC%E4%B8%BA%3F2.%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E8%8B%A5+a%2FcosA%3Db%2FcosB%3Dc%2FcosC%2C%E5%88%99%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E6%98%AF%EF%BC%88%EF%BC%89A.%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2+B.%E7%AD%89%E8%BE%B9%E4%B8%89%E8%A7%92%E5%BD%A2+C.%E9%92%9D%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2+D.%E7%AD%89%E8%85%B0%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A23.%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC)
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