Question

If A =B+C

and the magnitudes of A

, B
and c are 5, 4 and 3 units, the angle between A
and
C
is–
(A)cos{3\5} (b)COS{4/5} (c) pi\2 (D)sin{3\4}

Answer 1

Explanation:

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Answer 2

Answer:

it should be option b .........