求值:arcsin(sin3π/4)rt

求值:arcsin(sin3π/4)rt 求值cos[arctan2+arcsin(-1/3)]rt 求值：arcsin（sin^2/2）rt arcsin(sin3)=?WHY? 计算arcsin(sin3∏/4)+arccos(cos3∏/4) 反三角函数求值arccos(cos5π/4)=?arctan(tan4π/3)=?arcsin(sin6)=? arcsin(sin3)=?告诉偶~3Q~ 求值1.cos[arcsin(-4/5)-arctan(-3/4)]2.sin[1/2arcsin(-12/13)] arcsin[sin(19Π/12)]求值Π为3.1415926 三角函数sin3/4π=?sin3/4π=? sin3π/4怎么算? sin3π/4等于多少 求值arcsin(sin2)+arccos(cos4) arcsin(sin3)=_________若tanx=-根号2,x属于【5π/2,3π】,x=________ 求值:2cosπ/2-tanπ/4+3/4tan²π/6-sinπ/6+cos²π/6+sin3π/2 -1/4cosπ 求值:2sinπ/6+sin3π/2-2cosπ+2sinπ/3 求值:lg2+log3 27+lg5+3^(1-log3 2)+A(2 3)+sin3π/2 sin3分之4π等于多少,