化简:sin(2派-x)tan(派+x)cot(-x-派)/tan(3派-x)cos(派-x)
问题描述:
化简:sin(2派-x)tan(派+x)cot(-x-派)/tan(3派-x)cos(派-x)
答
sin(2派-x)tan(派+x)cot(-x-派)/tan(3派-x)cos(派-x)
=-sin xtan xcot (-x)/tan(-x)(-cos x)
=sin xtan xcot x/tan xcos x
= sin x/ tan xcos x
=1