sin6分之29派+cos负3分之29派+tan负的4分之25派
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发布时间:2024-09-30 07:09
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热心网友
时间:2024-10-21 03:36
=sin(4π+5π/6)+cos(π/3-10π)+tan(3π/4-7π)
=sin5π/6+cosπ/3+tan3π/4
=1/2+1/2-1
=0
热心网友
时间:2024-10-21 03:37
原式=(√6)/3+3(√6)/6-1/2×3√6
=(1/3+1/2-3/2)×√6
=-2(√6)/3
=1/3×(1-1/4)+1/3×(1/4-1/7)+……+1/3×(1/97-1/100)
=1/3×(1-1/4+1/4-1/7+……+1/97-1/100)
=1/3×(1-1/100)
=33/100