sin(-56π)=______.-数学

题目简介

sin(-56π)=______.-数学

题目详情

sin(-
5
6
π)
=______.
题型:填空题难度:偏易来源:不详

答案

sin(-class="stub"5
6
π)
=-sinclass="stub"5
6
π
=-sin(π-class="stub"π
6
)=-sinclass="stub"π
6
=-class="stub"1
2

故答案为-class="stub"1
2

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