化简sin(x+60°)+2sin(x-60°)-3
化简sin(x+60°)+2sin(x-60°)-3
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
化简sin(x+120°)+sin(x+240°)
化简sin(2x+π/3)-(根号3)sin²x+sinxcosx+(根号3)/2
化简sin(2π+x)cos(π-x)sin(π-x)/cos(x-π)sin(-π-x)sin(π+x)
3道求极限的题目1.sin 2x/sin 5x (x→0)2.(sin x - sin a)/(x - a) (x→a)
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
函数y=3sin(2x+60°)的最大值、最小值和周期
1/sin^2x的不定积分谢谢!(是1/sin x * sin x)
已知函数f(x)=2cosxsin(x+60°)-根号3sin^2x+sinxcosx
化简【完整步骤!】1.(sin^4x-sin^2x)/secx2.sin^4x-cos^4x【这道题的正确答案是sin^