Cos(180度+α)sin(-α)/tan(-α-180度)
化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(3
化简(1)、sin(α+180度)cos(-α)sin(-α-180度)(2)、sin3(-α)cos(2π+α)tan
化简:sin^(-α)-tan(360-α)tan(-α)-sin(180-α)cos(360-α)tan(180+α)
①sin(α+180°)cos(-α)sin(-α-180°)和②sin³(-α)cos(2π+α)tan(-
cos平方(-α)减sin(-α)分之tan(360度+α)
化简tanα(cosα-sinα)+sinα+tanαcotα+cscα
化简:tanα*(cosα-sinα)+[sinα(sinα+tanα)/1+cosα]
化简:tanα(cosα-sinα)+sinα(sinα+tanα)/1+cosα.
已知sinαcosαtanα
2sin²α-sinαcosα/sinαcosα+cos²α (tan=2)
.[1/cos(-α)+cos(180°+ α )]/[1/sin(540°-α)+sin(360°-α)]=tan^3
化简sinαcosα(tanα+cotα)