Physics, asked by surendrapatel1907, 1 month ago

prove that a = 2î +3ĵ+k and b = 2i-4j +8k are mutually perpendicular to each other​

Answers

Answered by swaransingh49957
2

Answer:

When vector is perpendicualr dot product is zero

(2

i

^

+3

j

^

+8

k

^

).(4

j

^

−4

i

^

k

^

)=0

−8+12+8α=0

8α=−4

So, α=

2

−1

α=

2

1

(2i^+3j^+8k^).(4j^−4i^+αk^)=0

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