化简1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x)1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x) 怎么化啊
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化简1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x)1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/
化简1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x)1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x) 怎么化啊
化简1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x)
1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x) 怎么化啊
化简1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x)1+sin(x-2π)*cos[x-(7π/2)]-tan(π-x)*tan(3π/2-x)-cos^2(-x) 怎么化啊
1+sin(x)*cos(x+pi/2)+tan(x)*(-tan(x+pi/2))-(cos(x))^2
=1-(sin(x))^2-(cos(x))^2+ sin(x)/cos(x)*(-sin(x+pi/2)/cos(x+pi/2))
=1-((sin(x))^2+(cos(x))^2)+sin(x)/cos(x)*(-cos(x)/(-sin(x))
=1
化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x
cos x/sin x+sin x/(1+cos x) 化简.
化简 1/2cos x-根号3/2sin x 根3sin x+cos x
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
化简1+sin x/cos x·sin2x/2cos²(π/4-x/2)
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x
化简sin(x)cos(x)cos(2x)
化简sin(x)cos(x)cos(2x)
sin x cos x cos 2x 化简
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
2cos x (sin x -cos x)+1
化简 cos^2(x)*sin^2(x)-sin^2(x)
化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x)
化简sin^4x-sin^2x+cos^2x
化简:sin^4 x-sin^2 x+cos^2 x
化简sin(2π+x)cos(π-x)sin(π-x)/cos(x-π)sin(-π-x)sin(π+x)
cos x/( 1-sin x)化简