Physics, asked by deependra1806hu, 1 year ago

A and B are two unit vectors and if magnitude of |A+B|=√3
then the value of (A - B).(2A+B) is-
(1) 2
(2) 3/2
(3) 1/2
(4) 1

Answers

Answered by raj8000

1

Answer:

1/2

Explanation:

la+bl2=lal2+lbl2+2a.b

a. b=1/2

then(A-B). (2A+B)=1/2

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