求值sin^2(α-π/6)+sin^2(α+π/6)-sin^2α

求值sin^2(α-π/6)+sin^2(α+π/6)-sin^2α Sin(π+π/6)Sin(2π+π/6)Sin(3π+π/6).Sin(2008π+π/6)求值 求值：cos^2α-sin^2α sin(-7π／6)求值 求值【sin(2π-α)sin(π+α)cos(-π-α)】/【sin(3π-α)-cos(π-α)】 求值sin²α+cos²α(π/6+α)+1/2sin(2α+π/6） 求值sin^2α+cos^2(π/6+α)+1)+1/2sin(2α+π/6) 求(6sinα+cosα)/(3sinα-2sinα)的值 tan(α/2)=2求值 求值:2sinπ/6+sin3π/2-2cosπ+2sinπ/3 sin^a+cos^(π/6+a)+1/2sin(2a+π/6)求值 求值sin²x+cos²(π/6+x)+1/2sin(2x+π/6) 求值sin(α+β)cosα-[sin(2α+β)+sinβ]/2 sin（π+π/6）sin（2π+π/6）sin（3π+π/6）.sin（2010π+π/6）求值 求值:sin^2α+sin^2β-sin^2α×sin^2β+cos^2α×cos^2β 已知6sin²α+sinαcosα-2cos²α=0,α∈（π/2,π）,求值1).(sinα-3cosα）/（sinα-cosα）；2）.sinαcosα-sin²α;3).sin²α-3cosαsinα-2 三角函数sinα求值. sin(-π/4)求值 若a∈(0,π/2),求值:√(1+sinα)+√(1-sinα)-√(2+2cosα)