Question

a vector A of magnitude 3 units is added to another vector B which has magnitude 6 units but has random direction anywhere in the same plane. When B has such a direction that angle made by resultant with B is largest...

options:
(1)magnitude of resultant of A and B is 3√3 units.
(2)angle between A and B is 120°.
(3)angle between B and resultant is 30°.
(4)angle between A and resultant is 60°.
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Answer 1

Explanation:

angle between B and resultant is 30°

angle between A and B is 120°

resultant =

$\sqrt{9 + 36 - 2 \times 3 \times 6 \times \frac{1}{2} } = \sqrt{27} \\ = 3 \sqrt{3}$

Hence these can be concluded by given figure....

hope this helps.

Answer 2

Answer:

hope the answer will help you

Explanation:

..........see in the pic