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3 years ago

13

Cho hình chóp SABC có đáy ABC là tam giác đều cạnh a tam giác SAB vuông cân tại s và nằm trong mặt phẳng vuông góc với mặt phẳng

đáy cosin của góc giữa đường thẳng SC và mặt phẳng SAB bằng

1 answer:

Leviafan [203]3 years ago

7 0

Answer:

I dont understand what you are saying sorry

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