已知偶函数f(x)在[-1,0]上单调递增且a,b为锐角三角形,比较f(sina)与f(sinb)的大小Is there anyone reply to me?

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已知偶函数f(x)在[-1,0]上单调递增且a,b为锐角三角形,比较f(sina)与f(sinb)的大小Is there anyone reply to me?
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已知偶函数f(x)在[-1,0]上单调递增且a,b为锐角三角形,比较f(sina)与f(sinb)的大小Is there anyone reply to me?
已知偶函数f(x)在[-1,0]上单调递增且a,b为锐角三角形,比较f(sina)与f(sinb)的大小
Is there anyone reply to me?

已知偶函数f(x)在[-1,0]上单调递增且a,b为锐角三角形,比较f(sina)与f(sinb)的大小Is there anyone reply to me?
f(x)为偶函数 在[0,1]上单调减
若 a >=b 则 f(sina)