注意:一下的o都代表:C TA 就是圈里面一个横!
已知sin(π-o)+sin(二分之三π-o)=三分之根号2(0小于等于o小于等于二分之π)
求sino+cos(2π-o)的值
人气:409 ℃ 时间:2020-04-03 12:06:24
解答
过程不用了叭,手机太难打.答案是3/4.保证正确噢.(^-^)
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