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Toán 12: Trong không gian Oxyz,cho điểm A(1;-2;3),B(2;b;c)mặt phẳng (α):x+3y-2z+5=0 và
5 months ago
119
Trong không gian Oxyz,cho điểm A(1;-2;3),B(2;b;c)
mặt phẳng (α):x+3y-2z+5=0 và đường phẳng ∆:(x+2)/3=(y-1)/2=(z+3)/1
Khi đó,để đường thẳng d đi qua hai điểm A,B song song với
mặt phẳng (α) và vuông góc với đường thẳng ∆ thì b+c bằng:
#hinhhockhonggianoxyz
#CachGiai
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