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想問這題><

2)某人在O點測量到遠處有一物作等速直線運動。開始時該物位置在P點,一分鐘後, 其位置在Q點,且<POQ=90°。再過一分鐘後,該物位置在R點,且<QOR=30°。 【91年數甲】Ans: 請以最簡分數表示tan²(LOPQ) = 3

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