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In a DeltaABC, angle B is obtuse and D, ...

In a `DeltaABC`, angle B is obtuse and D, E, F are the middle points of sides BC, CA, AB respectively. Which one of the following vectors has the greatest magnitude?

A

`vec(BC)`

B

`vec(CA)`

C

`vec(AB)`

D

`vec(AD)`

Text Solution

Verified by Experts

The correct Answer is:
B

Since, side opposite to greatest angle is longest and `angleB` is greatest angle in `DeltaABC`. Thus, `vec(CA)` has greatest magnitude.
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