sin(2x+π/6)与sin(2x+7π/6)的关系

sin(2x+π/6)与sin(2x+7π/6)的关系 sin^2(π/3-x)+sin^2(π/6+x) f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x) sin(x^2)/sin^2x 求导 2sin(x+π/4)sin(x-π/4)=? ∫sin(6x)sin(2x)dx=? sin^2(π/4 +x) sin(πx/2)求导 已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x) 已知sin(x+π/6)=1/4,求sin(5π/6-x)+sin^2(π/3-x) 化简 sin²x+sin²(x+2π/3)+sin²(x-2π/3) 2*sin（x+π/6）求导. 求值sin²x+cos²(π/6+x)+1/2sin(2x+π/6) 化简sin(-2x) lim(x(sin)^2) sin^2(x)求导 sin(2x)积分 sin(π/6-2x)=1/3q求sin(17π/6+2X)+sin^2(7π/3+2X)的值