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sin6分之35派+cos(-3分之11派)
人气:262 ℃ 时间:2020-06-20 21:36:45
解答
sin6分之35派+cos(-3分之11派)
=sin(6π-π/6)+cos(4π-π/3)
=-sin(π/6)+cos(π/3)
=-1/2+1/2
=0
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