Sin(15°+x)－sin(15°-x) 求大神!Sin(15°+x)－sin(15°-x)求大神!

Sin(15°+x)－sin(15°-x) 求大神!Sin(15°+x)－sin(15°-x)求大神! 函数y=sin(x+15°)+sin(x+75°)的最大值 sin(x+105°)cos(x-15°)-cos(x+105°)sin求化简 sin(x+105°)cos(x-15°)-cos(x+105°)sin(x-15°) cos(27°+x)sin(57°+x)-sin(207°+x)sin(327°+x) sin(30°+x)-sin(30°-x)等于多少? sin x sin(33°-x)cos(27°+x)+cos(33°-x)sin(27°+x) 求解sin(x-15)cos(x+15)+cos(x-15)sin(x+15) sin(sin(x))的奇偶性 sin 15°是多少 sin(2x+90°)等于什么 求函数f(x)=sin(x+20°)+sin(x+80°)的最值 f(x)=3sin(x-20°)+5sin(x+40°)的最大值 sin(x+15°)=1/3 则cos(x+105°)=? 函数y=sin(x+15°)+√2cos(x+60°)的最大值? sin(x－45°)＝-5/13,sin2x (sin 1/x) /x 化简sin(x+120°）+sin（x+240°）