ㄢ单糴痻舼跋办

单糴ㄢ痻舼$BIG=$JIL(癸郴à单)$JIL=$MLK(キ︽絬à单)狦0 < $BIG= ∝ 90∘タ┒ㄧ计sin琌糤ㄧ计 sin= KM琌盽计讽糤KLはτ搭ぶ┮IJKL縩=KLKN=KLKM繦ぇ禫讽=90∘ IJKLΘタよ硂舼跋办縩程

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