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sin6分之29派+cos负3分之29派+tan负的4分之25派
人气:443 ℃ 时间:2020-06-03 12:26:01
解答
=sin(4π+5π/6)+cos(π/3-10π)+tan(3π/4-7π)
=sin5π/6+cosπ/3+tan3π/4
=1/2+1/2-1
=0
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