Physics, asked by preet69005, 1 month ago

V1=6i - 4j; +8k V2=ai+ 4j - 2k find a=? ​

Answers

Answered by XxAngelicSoulxX
3

Explanation:

For what value of 'a' the vector 2i-3j+4k and ai+6j-8k are perpendicular to each other?

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

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