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sahil1531:
anyone wanna solve this question please??
is it (d) ?
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5
See the answer below.
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AxB= absin (theta)
A.B= abcos (theta)
From given conditon it follows
sin (theta)= root3cos (theta)
which means theta is 60.
For getting A+B we need magnitudes of these vectors as well. We have got angle from above relation.
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