Q.

If  P=(3,4,−12) then the d.c’s of  OP→ are

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a

313,413,−1213

b

(6,6,−3)

c

−27,37,67

d

(2,2,−1)

answer is A.

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Detailed Solution

P=(3,4,−12)a2+b2+c2=9+16+144=13D.c's of OP are 313,413,−1213
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