If two lines L1 and L2 with direction ratios \(a_1,b_1,c_1 \,and \,a_2,b_2,c_2\) respectively are perpendicular to each other then

If two lines L1 and L2 with direction ratios \(a_1,b_1,c_1 \,and \,a_2

1.	If two lines L1 and L2 with direction ratios \(a_1,b_1,c_1 \,and \,a_2,b_2,c_2\) respectively are perpendicular to each other then
A.	\(a_1 a_2+b_1 b_2+c_1 c_2=0\)
B.	True
C.	False
Answer» B.

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