问题
解答题
化简：f(α)=
|
答案
f(α)=
=sin(-α)cos(π+α)cos(
-α)π 2 cos(π-α)sin(2π+α)tan(π+α)
=-cosα．(-sinα)(-cosα)sinα (-cosα)sinαtanα
搜题请搜索小程序“爱下问搜题”
化简：f(α)=
|
f(α)=
=sin(-α)cos(π+α)cos(
-α)π 2 cos(π-α)sin(2π+α)tan(π+α)
=-cosα．(-sinα)(-cosα)sinα (-cosα)sinαtanα