kalau tegak lurus, maka cos teta = 0,
a • b = 0
-1 + 2p -9 = 0
2p = 10
p = 5
2a+b+c
= (2,10,6) + (-1,2,-3) + (4,7,0)
2a+b+c = (5,19,3)
semoga membantu :)
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kalau tegak lurus, maka cos teta = 0,
a • b = 0
-1 + 2p -9 = 0
2p = 10
p = 5
2a+b+c
= (2,10,6) + (-1,2,-3) + (4,7,0)
2a+b+c = (5,19,3)
semoga membantu :)