化简sin(π-α).cos(π+α).cos(3π2+α)cos(3π-α).sin(3π+α).sin(5π2-α).-数学

题目简介

化简sin(π-α).cos(π+α).cos(3π2+α)cos(3π-α).sin(3π+α).sin(5π2-α).-数学

题目详情

化简
sin(π-α).cos(π+α).cos(
2
+α)
cos(3π-α).sin(3π+α).sin(
2
-α)
题型:解答题难度:中档来源:不详

答案

原式=class="stub"-sinαcosαsinα
cosαsinαcosα
=-tanα.

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