Physics, asked by RushiDoiphode, 3 months ago

Find (a), if a→=3i-2-4k^ and
B→ =ai^ + 2j^ - k^ are perpendicular
one another

Answers

Answered by littlemeowmeowarmy7

5

Answer:

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

Hope you understood

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