tan(-35π/6)·sin(-46π/3)-cos(37π/6)·tan(55π/6)=?要过程

tan(-35π/6)·sin(-46π/3)-cos(37π/6)·tan(55π/6)=?要过程 tan(-35π/6)*sin(-46π/3)-cos37π/6*tan55π/6怎么做 若α∈(0,π/6) 比较tan(sinα),tan(cosα),tan(tanα)的大小 求值：1.cos(-14π/3) 2.tan（35π/6） 3.sin（-25π/6）1·cos(-14π/3) 2·tan（35π/6）3.sin（-25π/6） tan(2π/13)+4sin(6π/13) Sinπ/3Tanπ/3+tanπ/6COSπ/6－Tanπ/4COSπ/2 若a属于(0,π/2)试比较tanα、tan(tanα)、tan(sinα) sinπ+cos+(-π)+tanπ过程. sin（π+a）+tan π/4 已知α∈(0,π|2）,2tanα+3sinβ=7,且tanα-6sinβ=1,求sinα的值 已知α,β∈(0,π/2),且2tanα+3sinβ=7,tanα-6sinβ=1,则sinα= 求证:(sin 2x /(1-cos 2x) )·(sin x /(1+sin x))=tan (π/4-x/2). 若a属于(0,π/4)试比较tan(a),tan(tan(a)),tan(sin(a))大小, cosπ/3+tanπ/4+3tan²π/6+sinπ/2+cosπ+sin3π/2等于?. cosπ|3-tanπ|4+3|4tan²π|6+cos²π|6-sinπ|4 计算 :cos9π/4+ tan(-7π/6)+sin(-5π)+tan(-23π/6)的值 sin²(-α)·cos(π+α)/tan(2∏+α)tan(∏+α)cos³(-∏-α) 已知tanα=3tan(α+β),β=π/6,则sin(2α-β)的值