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cos(-23π/4)+sin(37π/6)
人气:146 ℃ 时间:2020-06-10 16:17:33
解答
cos(-23π/4)+sin(37π/6)
=cos(-6π+π/4)+sin(6π+π/6)
=cosπ/4+sinπ/6
=√2/2+1/2
=(√2+1)/2
应该没出错,若有问题请追问,
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