Question

R vector = 2i cap — 3j cap​

Answer 1

Answer:

A

=2i+3j+8k

B

=4i−4j+ak

Since

A

and

B

are perpendicular

A

.

B

=0

(2i+3j+8k)(4i−4j+ak)

8−12+8a=0

a=

8

4

=

2

1

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