The resultant C of A and B is perpendicular to A . Also |A| = |C|. What is the angle between A and B?
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Answer:is 45
There are three vectors given in this question if qe join this then we get the shape of triamgle as a =r then it is called isosceles triangle
As there is written that a is perpendicular to r them one angle is 90after this we come to know that in isosceles triangle two base angle opposite to same side a and c are equal yhen answee is 180 -90 =90 /2 =45 degree between a and b or r and b
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