Question

There are two Vectors P = 4i+ 8j+6k and Q = -2i-4 j-3k.it
P=aQ then find the value of a​

Answer 1

Answer:

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Explanation:

The two vectors, say A( 2i — 3j + 4k) and B(ai + 6j — 8k) are perpendicular, which means angle between them is 90°.

x = 90°

We know that

A.B = AB cos x

A.B = AB cos 90°

A.B = AB * 0

A.B= 0

(2i-3j+4k).(ai+6j-8k)= 0

On solving, we get 2a-18-32=0

a = 25

Answer 2

Answer:

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