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+1 vote
19.9k views
in Vector algebra by (52.5k points)

If |vector c|2 = 60 and vector c x (i + 2j + 5k) = 0,  then a value of vector c . (- 7i + 2j + 3k) is

(A) 42

(B) 12

(C) 24

(D) 122

1 Answer

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Best answer

Answer is (D) 122

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