Question

Find whether the given vectors 2i^+3j^+4k^&4i^+6j^+8k^ parallel or not?​

Answer 1

Answer:

For the vectors 2i - 3j + 4k and ai + 6j - 8k, the dab item is: 2*a + (- 3)*6 + 4*(- 8) As they are opposite, which implies point between these two vectors is 90 degree. In this way, their dab item is 0. Hence, (2i-3j+4k). (ai+6j-8k)=0 Or, 2a-18– 32=0 Or, 2a=50 Or, a=25.

Step-by-step explanation:

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