Physics, asked by bhavanianusha5494, 26 days ago

fine the magnitude of the given vector
1) 2i+3j+8k=A

Answers

Answered by tharmarajtharmaraj99

1

Answer:

A=2i+3j+8k

B=4i−4j+ak

Since A and B are perpendicularA.B=0

(2i+3j+8k)(4i−4j+ak)

8−12+8a=0

a=84=21

Explanation:

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