Question

If |vector A X vector B| = √3 vector A . vector B, then find |vectorA + vector B| Please help

Answer 1

Answer:(A^2+B^2+AB/2)^1/2

Explanation:

See A×B means AB sin theta and A.B means AB cos theta. So according to the question

AB sin theta=AB cos theta 3^1/2

Ab will get cancel.

Then sin theta / cos theta =3^1/2

tan theta=3^1/2

Theta =60

n after this put it in the addition eqn.

Hope this will help u.

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