tanθ:tan(π/4+θ)=tanθ:(1+tanθ)/(1-tanθ)=2:15所以tanθ=1/5或tanθ=2/3 则对应的tan(π/4+θ)=3/2或tan(π/4+θ)=5所以p=-(tanθ+tan(π/4+θ))=-(1/5+3/2)=-17/10q=tanθ*tan(π/4+θ)=1/5*3/2=3/10或者p=-(tanθ+tan(π/4+θ))=-(2/3+5)=-17/3q=tanθ*tan(π/4+θ)=2/3*5=10/3