Question

Please answer me this question

Answer 1

Explanation:

If A vector and B vector are orthogonal then the angle between them will be 90.

Thus the resultant time =>

T = √( A^2 + B^2 + 2AB×cos¢)

= √{ (cos^2wt + sin^2wt) + (cos^2(wt/2) + sin^2(wt/2)) + 0 }

= √(1 + 1)

= √2

T = √2...●

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Hope it was helpful.

Answer 2

Answer:

Answer is option b

t=4........