若(tanx)^2=2(tany)^2+1,则(siny)^2=2(sinx)^2-1
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若(tanx)^2=2(tany)^2+1,则(siny)^2=2(sinx)^2-1若(tanx)^2=2(tany)^2+1,则(siny)^2=2(sinx)^2-1若(tanx)^2=2(ta
若(tanx)^2=2(tany)^2+1,则(siny)^2=2(sinx)^2-1
若(tanx)^2=2(tany)^2+1,则(siny)^2=2(sinx)^2-1
若(tanx)^2=2(tany)^2+1,则(siny)^2=2(sinx)^2-1
tan²x=2tan²y+1
1+tan²x=2(1+tan²y)
sec²x=2sec²y
cos²x=2cos²y
1-sin²x=2(1-sin²y)
sin²x=2sin²y-1
高手进tanx+tany/tanx-tany=3/2 求tanx/tany?
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