If DeltaABC, if A-=(3,2,6), B-=(1,4,5) ...

If `DeltaABC`, if `A-=(3,2,6), B-=(1,4,5) ` and `C-=(3,5,3)`, then `m angleABC=`

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

Verified by Experts

The correct Answer is:

D

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