Report - giaovienvietnam.com · 2020. 2. 3. · Xét ASGA vuông G có : SG = AG. tanß — AM. tan /3 + AABC AM = AB.tanß= 1 a2N"5 ax/5.tanß a3.tanß VâY' — Áp dung: Cho hinh chóp

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