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If the vectors PQ= -3i + 4j + 4k and PR ...

If the vectors `PQ= -3i + 4j + 4k and PR = 5i - 2j + 4k` are the sides of a triangle PQR then the length of the median through `P` is
a)`sqrt14`b)`sqrt15`c)`sqrt17`d)`sqrt18`

A

`sqrt14`

B

`sqrt15`

C

`sqrt17`

D

`sqrt18`

Text Solution

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The correct Answer is:
D
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