化简:sin(540°-x)tan(900°-x)•1tan(450°-x)tan(810°-x)•cos(360°-x)sin(-x)-数学

题目简介

化简:sin(540°-x)tan(900°-x)•1tan(450°-x)tan(810°-x)•cos(360°-x)sin(-x)-数学

题目详情

化简:
sin(540°-x)
tan(900°-x)
1
tan(450°-x)tan(810°-x)
cos(360°-x)
sin(-x)
题型:解答题难度:中档来源:不详

答案


原式=
sin(180°-x)
tan(-x)
•class="stub"1
tan(90°-x)tan(90°-x)
class="stub"cosx
sin(-x)

=class="stub"sinx
-tanx
•class="stub"1
cot2x
•class="stub"1
-tanx

=sinx
故答案为:sinx

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