化简sin(540°+α)cos(360°-α)/sin(450°+α)cos (900°-α)

化简cos(540°-α)sin(α-360°)/sin(-α+180°)cos(180°+α) 化简sin(540°+α)cos(360°-α)/sin(450°+α)cos (900°-α) 化简,cos²(-α)-tan(360°+α)/sin(-α) 化简cos^2(-α)-[tan(360°+α)/sin(-α)] .[1/cos(-α)+cos(180°+ α )]/[1/sin(540°-α)+sin(360°-α)]=tan^3α cos(540-α)sin(α-360)/sin(-α+180)cos(180+α) Cos(180°+α)*sin（α+360°)/sin(-α-180°)*cos(-180°-α) sinα+cosα 化简 化简①sin（π+α）×cos（3π/α）+sin（π/2+α）×cos（π+α）②sin（540°-x）×cos（x-360°）/tan（900°-x）×tan（450°-x）×tan（810°-x）×sin（-x） 已知α=1050°,化简sin(540°-α)/tan(α-180°)×sin(-α-360°)/cos(720°-α) 求证：(1/sinα-sin(180°+α))/(1/cos(540°-α)+cos(360°-α))=1/(tanα)^3 化简sin(540°-a)tan (a-180°)cos(a-270°)/cos(a-360°)tan(720°+a)sin(-a-360°)过程、速度速度! 化简：1+sin(α—360°)cos（α—270°）—2(cosα)^2 sin(540°+α)cos(360°-α)/sin(450°+α)tan(900°-α)急! 化简cos(45°-α)-sin(45°+α),得 化简cos(α+30°)cos(α-30°)-sin(α+30°)sin(α+150°),化简cos(α+30°)cos(α-30°)-sin(α+30°)sin(α+150°)， 化简：tanα(cosα-sinα)+sinα(sinα+tanα)/1+cosα. 化简:cos(90°-a)/sin(270°+a)·sin(180°-a)·cos(360°-a)=