Mathematics
Senior High
方程式の計算で答えを教えて頂けないでしょうか。
変数はp,q,r,sの4つ、a,b,c,dは定数です。
1) p^2+q^2=a^2
2) (r-q)^2+s^2=c^2
3) (p-r)^2+(q-s)^2=d^2
4) q*(b-r)=p*s
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